Locke, Hobbes, Mill, Thoreau Essay Example for Free

Locke, Hobbes, Mill, Thoreau Essay John Locke explains the state of nature as a state of equality in which no one has power over another, and all are free to do as they please. He notes, however, that this liberty does not equal license to abuse others, and that natural law exists even in the state of nature. Each individual in the state of nature has the power to execute natural laws, which are universal. I believe that Locke is correct in his analysis of the state of nature however; Locke? s theory includes many assumptions. First is the assumption of a system of morality, the natural law derives from a theory of justice, a set of rights. No one would have any rights at all in the absence of a moral code applicable to human actions, nor would there be any standard of just punishment. Locke frequently uses the term rights and appeals to conscience and calm reason, all of which reflect his assumptions about justice and morality. For individual property to exist, there must be a means for individuals to appropriate the things around them. Locke starts out with the idea of the property of person; each person owns his or her own body, and all the labor that they perform with the body. When an individual adds their own labor, their own property, to a foreign object or good, that object becomes their own because they have added their labor. This appropriation of goods does not demand the consent of humankind in general, each person has license to appropriate things in this way by individual initiative. Locke then places a bound on this type of acquisition, a person may only acquire as many things in this way as he or she can reasonably use to their advantage. One can only take so much as one can use. Lock applies these rules to land: a person in a state of nature can claim land by adding labor to it, building house on it or farming on it, but only so much as that person can reasonably use without waste. Locke then defines labor as the determining factor of value, the tool by which humans make their world a more advantageous and rewarding place to inhabit. Locke states that in order for a civil society to be established, the individuals must forfeit some of their rights that they have in the state of nature. This needs to be done so everyone can live together in peace. If everyone had the right to take whatever he or she could use, this might infringe on another members right to take whatever he or she could use. This consent to the laws in put upon the society in an indirect way. The people didnt actually say I will not take that mans land but it is inferred through the agreement that the other man wont take my land. This way we can all live in harmony together. Locke points out that any society has the right to rebellion. In order to justify this, Locke says a society must be in a very poor state. The state must be infringing on the natural rights of the people. A society couldnt rebel for the sake of rebellion, this would cause chaos and in order to return chaos to order tyranny would follow. Locke is very opposed to tyranny for obvious reasons. The voice of the people doesnt get heard and causes injustice. This eventually leads into a cycle. This justifies rebellion but since the people have to be strictly controlled, a rebellion couldnt get organized and there is no way out of the circle. John Stewart Mill Mill writes a majority may consciously try to oppress a minority. He also states that this concept of a tyranny of the majority has come to be accepted by major thinkers. What ever the general will of the majority dictates is what gets done. This is illustrated in the United States Congress. It doesnt necessarily consciously try to oppress the minority, but if the US didnt have the balance in power, what ever the majority wanted would get done without the consent of everyone. Mill discusses why silencing opinions hurts humanity. His first argument is that the suppressed opinion may be true. He writes that since human beings are not infallible, they have no authority to decide an issue for all people, and to keep others from coming up with their own judgments. Mill asserts that the reason why liberty of opinion is so often in danger is that in practice people tend to be confident in their own rightness, and excluding that, in the infallibility of the world they come in contact with. Mill contends that such confidence is not justified, and that silencing potentially true ideas hurts all people. This brings us to the next argument Mill makes. He observes that if an opinion is true, it will survive persecution. This is generally true; however when history is written, it might conveniently forget the truth for many generations. A perfect example of this is Nikola Tesla. He was considered one of the greatest if not the greatest scientist in his time, but his opinion (the truth) was silenced because he was thought to be crazy. Mill tries to show the contingency of popular beliefs about truth while going to great lengths to not actually state that any popular views about things like religion are wrong. Galileo and Copernicus are just a few of the examples of people getting persecuted for religious reasons for what is now believed to be true. Henry David Thoreau Thoreau says that while everyone recognizes the right to revolution when faced with an intolerably tyrannical or inefficient government, most people say that such a revolution would not be warranted under current conditions. However, Thoreau argues that we have not only the right, but also the duty to rebel. He uses an example from the Mexican-American War. He argues Americans must stop the slavery and war with Mexico even if it costs them their existence. He believes the war is unjust and the people have the duty to rebel against the government to protect their conscience. One of the most important themes throughout Thoreaus work is the notion of individualism. Deeply skeptical of government, Thoreau rejects the view that a person must sacrifice or marginalize his values out of loyalty to his government. He believes individualism is the most important virtue in humanism. Furthermore, he argues that if an individual supports the government in any way, even by simply respecting its authority as a government, then that person is implicated in the injustices committed by the government. For example, if a German in Nazi Germany let the injustices against the Jews go by because he feared retribution from the government, he is just as responsible as the people who actually executed the Jews. However, a person couldnt withdraw his consent because withdrawing would be morally unjust. This is where a persons duty to rebel comes into play. A person must actively try to change what they dont agree with. Thoreau believes a very heavy responsibility should be placed on the individual to make sure the individual consents to everything. Thomas Hobbes It can be understood from Hobbes the state of nature is what would exist if there were no government, no civilization, no laws and no common power to restrain human nature. The state of nature is a war of all against all, in which human beings constantly seek to destroy each other in an incessant pursuit for power. Life in the state of nature is nasty, brutish and short. From this one can infer Hobbes believes human nature is inherently evil and corrupt. To prevent the ensuing chaos, Hobbes believes a social contract must be created. To inter into a social contract the individual must give up some of his rights in order to preserve the peace. This becomes obvious when the laws of nature are looked at. Hobbes states The right of nature, which writhers commonly call jus naturale, is the liberty each man hath to use his own power, as he will himself, for the preservation of his own nature; that is to say, of his one life; and consequently, of doing anything, which in his own judgment and reason, he shall conceive to be the aptest means thereunto. People must surrender part of this right in order to live in harmony. Obviously when Hobbes discusses right to do anything in order to preserve ones life, this cant mean killing someone to preserve ones life.

Using The Macro External Environment Analysis

Using The Macro External Environment Analysis Macro external environment here includes the factors such as issues related to politics, economical reforms and achievements, social behaviour, technological enhancements and inventions, environmental changes and environmental concerns and legislation and legislative changes. All these factors bear a significant effect on any industry and business. A business has take into consideration all such effects and then formulate its strategies and policies to work along with them and prosper. PESTEL analysis tool helps in determining the effect of all such factors on an industry and businesses. With the help of PESTEL analysis we will be seeing the affects of such factors on Indian Bakery and Dairy Industry. PESTEL analysis is a technique for identifying and listing the political, economic, social, technological, environmental and legal factors in the general environment most relevant to an organisation. (Boddy, D (2005). Management An Intoduction. 3rd ed. UK: Pearson Education. 88.) Type of Factors Effecting Factors Political Economical Social Technological Environmental Legal Exemption on Customs on Sugar Raw Material Import Shortage of Milk Need for Healthy Eating Habits Cloning of Livestock Change in the Climatic Conditions Raising the Norms for the Probiotic Food VAT on Biscuits Rise in Sugar Production and Duty Free Sugar Imports Problems with Cloned Livestock New Age Packaging Removal of Import Duty on Dairy Products Globalization Incentives to Build Cold Storage Facilities Requirement for Logistics Political Exemption on Customs Duty on Sugar Raw Material Import Due to the shortage in the production of sugar the deadline for the exemption on customs duty on raw sugar imports has been extended by the government to April 1, 2011 (Dey, A Jha, Dilip K (2010) Duty-free sugar imports extended till April 2011, Business Standard). Since sugar is a major input in the bakery, the price of sugar highly influences the price of inputs of the bakery industry. Exemption on customs duty will help in purchasing sugar at lower cost, which in turn will control the cost of production. VAT on Biscuits The VAT of 12.5% on Biscuits, being the only processed food item to attract such high VAT rates, will affect the pricing of the product (Bhushan, R (2009) Biscuit prices to rise by 10%, The Economic Times). Price of the biscuits might need to be increased due to the high VAT rates which may result in switch of brands due to the highly competitive market. Removal of Import Duty on Dairy Products The whole-sale price based inflation indicates that the milk prices have moved up by 14.73% over the last year. Worried about the rising prices government announced the removal of duty on Skimmed Milk Powder (SMP) and other dairy products (Govt removes import duty on dairy products (2010), Business Standard). The imports at cheaper rate would help in reduce the cost factor for dairy products. Incentives to Build Cold Storage Facilities Wastage of food items due to lack of cold storage facilities lead to a loss of Rs. 500 billion every year. The government announces schemes and incentives to attract investments in cold storage warehousing (Union Budget 2010: Cold-storage incentives to attract fresh funds (2010), The Economic Times). Increase in the number of cold storage facilities would help in preserving products better and reduce the wastage cost. Economical Shortage of Milk Even though the milk production has risen by 4.6% compound annual average growth rate, it still cannot match up with the increasing demand. The demand for milk has been growing at a faster rate than the growth rate of milk production resulting in the shortage of milk supply (Milk output would stagnate (2010) The Economic Times). India cannot meet its expected demand if the demand and supply rise at the same rate. For the same the reason, the milk prices are on a constant rise. Price of milk increased by 12.6% to 13.6% (Goyal, K (2010) Indias Food-Price Inflation Holds Near 11-Year High- Business Week). This can cause an increase in the input cost for the dairy products and which in turn can lead to hike in price or lower profit margins. If the company increases the price of its products, it may affect the sales as it might lose on consumers. Rise in Sugar Production and Duty Free Sugar Imports The total sugar production in the first six months ending September 2010 is expected to be 22% more than the output in the unchanged phase last season, the total production expected is at 16.7 million (Press Trust India (PTI) (2010) Sugar output rises 22% in first half of 2009-10, Business Standard). Due to the shortage in the production of sugar the deadline for the exemption on customs duty on raw sugar imports has been extended by the government to April 1, 2011 (Dey, A Jha, Dilip K (2010) Duty-free sugar imports extended till April 2011, Business Standard). The increase in sugar production and the duty exemption on raw sugar can help in purchasing sugar at lower prices and this in turn can help in producing goods at lower prices. Globalization Globalization a universal phenomenon is affecting each and every industry. The world is coming closer, the communication gap is closing and the businesses are going global. This can serve as an opportunity to expand the business to a global level but on the other hand there is a threat of new entrants from international market. Requirements for Logistics Logistics in India suffer due to the poor infrastructure and other limitations. There is a high demand for sophisticated third party logistics so the domestic logistics service providers are trying to improve their service. International participation is also expected in the logistics industry (Pandey, S Basu, A (2010) Logistics cos ramp up supply chain to meet rising demand, The Economic Times). Sophiscticated logistics system will help in proper supply chain management and on time delivery of goods, which help in maintaining the shelf life of goods on meeting the demand on time. Social Need for Healthy Eating Habits Studies say that Indians are more prone to Coronary Artery Disease (CAD), which is the major independent risk factor causing Cardiovascular diseases, due to the smaller calibred arteries found in Indians (Isalkar, U (2009) Indians more prone to heart disease, The Times of India). This suggests that Indians should move towards more healthy food and diet. This could be a new area to explore for Britannia with its new health associated products like Nuti-Choice biscuits and Actimind flavoured milk. Problems with Cloned Livestock Cloned animals are supposed to be suffering from large-offspring syndrome. The mother cows face a problem in giving birth to the cloned animals as they are larger than normal. Also these cloned animals suffer from health issues (Gogoi, P (2007) The case against cloning, BusinessWeek). It is morally wrong to clone animals as they cause problems to the mother during the birth and moreover the cloned livestock suffer from health issues which might make unsafe to consume the produce from them. Technological Cloning of Livestock India, a late entrant in cloning research, is now moving with a great pace in cloning technology. Hand guided cloning technique, a technique very different from the conservative cloning practice has been a successful venture (Mahalakshmi, BV Chowdhary, S (2009) Cloning Glory, The Financial Express). New Age Packaging The new packaging systems help in protecting food from micro-organisms by creating shelter layer. It uses new technologies like oxygen scavenging function, atmosphere control, biodegrability etc. and is low cost (Han, J Packaging Innovations, Bakers Journal). The packaging technology helps in preserving food for longer by protecting them from micro-organisms with the help of new technologies, thus resulting in longer shelf life of the food. The advantage of low cost packing and longer shelf life could be very beneficial for the company in increasing its profit margin. Environmental Change in the Climatic Conditions Climate plays an important role in the agriculture process. The change in the rainfall pattern has been a matter of concern now in India. The agriculture sector in areas which are monsoon dependent suffered badly due to the change in the rainfall pattern. The sector suffered a huge loss in terms of total output (Bhosale, J (2009) Farmers worried over climate disturbances, The Economic Times). The loss in crop will affect the input supply and this might delay or cause problems in the production. So the industry might not be able to meet the demands resulting in the loss of customers. Legal Raising the Norms for the Probiotic Food There is a need for setting the standards for probiotic food. Clinical tests should be conducted on the probiotic foods before they could reach the market for sale. The Indian Council of Medical and Research has submitted the proposal for the same to the government (Das, S (2009) Probiotic food likely to come under clinical trial ambit, The Financial Express). Strict norms will help in raising the quality standards but on the other hand the cost and time of production might subsequently increase. Micro External Environment Analysis Factors that influence the micro external environment are Competitor Rivalry, Threat of New Entrants, Threat of Substitutes, Buyers Power and Suppliers Power. These factors play a vital role in determining the current situation of the business and to plan strategies accordingly. With the help Porters Five Forces we will be analysing these factors and their immediate effect on the company. Five forces analysis is a technique for identifying and listing those aspects of the five forces most relevant to the profitability of an organisation at that time. (Boddy, D (2005). Management An Intoduction. 3rd ed. UK: Pearson Education. 83.) Competitor Rivalry: BIL has a market share of 38% and has been growing at 27%, compared to the industry growth rate of 20% (Saxena, R (2007) Battle-scarred Britannia on expansion spree, Business Standard) and has many competitors based on the nature of product. Parle and ITC (Sunfeast) pose a great competition to BIL (Biscuit Industry: India (2010), Market Research India). BIL earning major of its income from the biscuits (Britannia Annual Report 2007-08 (2008)), and Parle and ITC are the other major players in biscuit market. BIL is also into the production of dairy products, where the two major players in market are Amul and Nestle. Amul is the leader in the dairy industry. There is also a high level of competition from the unorganised baking sector. Overall rivalry is high. Threat of New Entrants: The entry on a small scale dairy industry and in the unorganised baking sector is easy. But on the other hand to enter the large scale dairy industry and organised baking sector a huge amount of investment is required in terms acquiring assets and to establish supply and distribution chains. Government regulations pertaining to food norms and others may also seem to be unattractive. Looking at the latest trends, the bakery industry is expected to earn huge revenues which might attract new entrants (Vijay, N (2008) Indian Bakery sector foresees high growth and increasing interest in product offering, FnBNews.com). So the threat of new entrants is moderate. Threat of Substitutes: Savoury snacks, crisps, cereals, fruits and other fast food can be substituted for biscuits. Dairy products are dubious to be replacing with other products as they key ingredients of majority of peoples diet. So the threat is a very moderate threat of substitutes. Buyers Power: The buyers of these products could be a retailer or the consumer. Both the dairy and bakery industry are price sensitive, so a little increase in price might lead the consumer to shift other brand or product. So the buyers power is calculated to be very strong. Suppliers Power: The major supplies for a bakery industry include wheat, sugar and other agriculture products. And the major supplies for dairy product is milk. Its difficult to bargain with the suppliers of the above mentioned inputs as the price of these inputs is majorly influenced by the production of these inputs. The prices tend to be high as the demand for these products is rising at much faster rate than supply. The secondary supplies include the packaging material. The secondary supplies can be easily substituted with the low-cost ones to save on cost. Overall the suppliers power is assessed to be moderate. Conclusion of Five Forces Analysis: There is an existence of major players in the market with a moderate level of threat of new entrants and substitutes. The suppliers power is moderate but the buyers power is measured to be strong. So the rivalry is suggested to be high. Stakeholders and Corporate Social Responsibilities (CSR) Freedman (1984) defines a stakeholder as any individual or group who can affect, or is affected by, the achievement of the organisations objectives. Further in addition to that, Clarkson (1995), stated that the government and the other communities that effect the working of the business and the market also form as a part of stakeholders. Stakeholders, except the employees, have a high power over the strategic change ideas (Hayes, J (2007). The Theory and Practice of Change Management. 2nd ed. UK: Palgrave Macmillan. 153). Internal Stakeholders The internal stakeholders are the ones associated with the company internally. For BIL its internal stakeholders would be: The Shareholders The Board of Directors, and The Employees Currently, nearly 51% of shares are held by Corporate Bodies and the rest 49% is held by the public (Statement showing shareholding pattern (2009), Britannia Industries Limited). The board consists of 11 members (Company Overview, Britannia Industries Limited) and employees nearly 2000 people (Britannia Industries Ltd. Overview, MarketLine). External Stakeholders The external stakeholders are the ones who are not immediately associated with company but influence the decision making of the company. To BIL the external stakeholders are as follows: Customers Suppliers Contractors Government Regulatory Agenices (like Food Safety and Standards Authority of India, etc.), and Society Britannia being the leader in the baker industry of India has a huge amount of customers to cater. Britannia has to keep up the tastes and quality preferences of its customers. The government plays an important in influencing the market by creating and changing the policies. BIL has to adhere to the rules and regulations formulated by the regulatory agencies. The suppliers and contractors form an important part of a business. Britannia completely relies on its suppliers and contractors for its raw materials. Corporate Social Responsibility (CSR) For years corporate entities followed the practice of providing goods and services and maximizing wealth. But the trends have changed over the period of years. The companies are now expected to be more socially responsible. The company now has to be responsible to the stakeholders, society and environment. They are expected to pay back to the environment and society for all the affects that are caused due to its operations (Idowu, S Filho, W (2009) Global Practices of Corporate Social Responsibility. Berlin: Springer. 1-2). BIL believes in working with the society and the culture. It gives a premier importance to the nation and its policies. It believes in being a good corporate citizen by not just adhering to the rules and regulations but also by helping the community to improve the quality of life. BIL involves itself in initiating and providing support to community health and family welfare, water management, vocational training, educating people and encouraging the application of modern techniques and technologies. BIL believes in ethical behaviour.

Use of Language in A View from the Bridge Essay -- A View from the Bri

Use of Language in A View from the Bridge Examine Miller’s use of language and dramatic devices in helping the audience to understand the themes of A View From The Bridge Arthur Miller is regarded as a great dramatist and he explores the life struggles of an ordinary man against authority and insurmountable odds and in ‘A View From The Bridge’ he uses many dramatic devices and enigmatic themes to help the audience understand the play. Some of the main themes are jealousy, love, law, justice and social class. The play opens with Alfieri’s thoughtful analysis of the situation in Red Hook. Alfieri is a sympathetic and an educated lawyer and ‘And when I saw him walk through my door, I knew why I had waited’ clearly shows Alfieri’s character of being a perceptive and understanding man. He speaks in a conversational style and he tells the story in a series of flashbacks and he is in control of the play. He immediately creates the atmosphere – where crime was once set in that very neighborhood. Alfieri has a mysterious role and Miller uses him as a crucial link between the characters he is also used as a narrator, commentator and sometimes a character. He talks about it being ‘better to settle for half’ and how he likes that better as, the search for absolute justice results in intolerable consequences as well as, being virtually impossible. Giving details on how the law is limited and cannot deal with every human problem he explains the boundaries to both Marco and Eddie, knowing in his heart they will probably ignore what he has said, however, he cannot take further action to avoid the conflict. Alfieri’s role is to look over the action and remain the purpose throughout, also, Alfieri offers the audienc... ... the audience is aware, from Alfieri’s speech, that the main character is led by fate towards an ending that cannot be escaped by anyone. Miller used the basic themes to build his play up on such as, justice, love, jealousy, law and social class. He used them to put the play together and help the audience understand the thoughts, feelings and emotions of the characters. He used dramatic devices and certain language, from Alfieri’s educated speech to Eddie’s inexpert however, realistic American language, to do so. Miller used these techniques in a clever way so he was able to express his ideas fully. One way was through Alfieri, he was used as a character and a narrator to emphasize the themes to the audience. Alfieri leaves the audience thinking about these techniques and themes that Miller used that caused Eddie to get the tragic ending that he did.

AIDS Resistance Genes :: Biology

The What AIDS researchers have recently uncovered a genetic trait that may provide protection against HIV-1. A "defect" that could account for unexplained cases of individuals that seem to have an immunity or protection against HIV-1. They are calling the trait an "AIDS Resistance Gene". What is an AIDS-Resitance Gene? This is just one of the questions our group inquired about when we began our investigations into the latest of AIDS research. AIDS Acquired immune deficiency syndrome, AIDS, is a serious disease that becomes more and more common in our nation and around the world. AIDS is defined by certain criteria established by the U.S. Centers for Disease Control and Prevention based on lab evidence such as T4 cell count, the presence of certain diseases, and other conditions. WHAT CAUSES AIDS? This disease is caused by the virus known as Human Immunodeficiency Virus Type 1 (HIV-1) (Structure of HIV), which attacks cells in the immune system, leading to the system's inability to resist harmful organisms. It damages the cells in the immune system, causing the body to lose the ability to fight off infections and diseases. During the course of infection, CD4 T-cells (a special type of infection-fighting white blood cells) are disabled and killed as their numbers decline. From 1981, when the first cases of AIDS were reported, through mid-1995, more than 476,000 individuals had contracted AIDS in the U.S. More than 295,000 of these individuals died. These numbers do not include those infected with HIV. Without symptoms of AIDS, nearly 1 million Americans have been infected with HIV through the mid-1990's. An estimated 19 million individuals world-wide have been infected with AIDS since the late 1970's. History Research has lead some to believe that HIV arose in Africa from retroviruses of monkeys. It is said that urbanization and the change in traditional lifestyles brought HIV-1 to the cities. It then spread to other parts of the world. However, it is proven that HIV-1 has been in circulation since 1959, because antibodies to HIV-1 have been detected in stored frozen blood samples taken from individuals in Zaire in 1959 and the United States in 1968. AIDS was first officially detected in the United States in 1981 in New York and California. In 1981 doctors found what they thought was a rare form of cancer called Kaposi's Sarcoma in many males. These patients also had signs of a type of pneumonia called Pneumocystits which occurs when one's immune system is not functioning well.

Friendship in Harry Potter Essay -- English Literature

Friendship in Harry Potter Friendship is an in-depth relationship mixing trust, loyalty and support. It is the combination of understanding, empathy and intimacy. But, no one can form a friendship until he/she realizes that the basis of being friends is meeting the needs of the other person. One must be a friend in order to have one (Mugglenet). Friendship and its main components: loyalty-trust, support, and similar values are very well emphasized in Harry Potter and The Sorcerer’s Stone. Trust and loyalty go hand-in-hand for friends. Friends are trusted with secrets, both large and small, because good friends never break a confidence. Good friends are forever loyal. This is the case of Hagrid with Professor Dumbledore. Hagrid is forever loyal to Dumbledore despite of their differences because the professor has trusted Hagrid with important undertakings. An important vote of trust and responsibility that friends deserve in order to feel appreciated. A similar example of loyalty is portrait when Harry stood up for his new friend Ron Weasley when Draco Malfoy insult...

Aluminium is the third most common element on Earth after oxygen and silicon

Aluminium is the third most common element on Earth after oxygen and silicon. The aluminium industry had a Gross Domestic Product of $3.1 billion in1997/98, ranking the aluminium industry amongst Australia's leading manufacturers and employs over 16000 people directly. The total value of export earnings was about $6.3 billion in 1998/99, second only to coal as an export industry for Australia. These facts underline the fact that the aluminium industry is a major asset to Australia and is world competitive. Aluminium is important to us currently and is used from everything from soft drink cans to car bodies to window frames. Aluminium is lightweight, strong, long-lasting, highly corrosion resistant as a protective oxide coating is naturally generated, is an excellent heat and electricity conductor, has good reflective properties, is very ductile, completely impermeable and odourless and totally recyclable. Despite this, less than 200 tonnes in 1885 were produced compared to approximately 22 million tonnes in 1998 – plus some 5 million tonnes of recycled Aluminium. This is because aluminium is so highly oxidized that it can be only refined using huge amounts of electricity and electricity did not become readily available until this century. Thus, it is known as the metal of the 20th century. There are three process involved in the manufacture of Aluminium: Bauxite mining, alumina refinery and aluminium smelting. Raw Materials – Cryolite (Na3AlF6). Sodium Aluminium Fluoride. This reduces the temperature needed to electrolyse the aluminium reducing the cost. It was originally obtained from mines in Greenland, but the supply has depleted and it is now produced synthetically. – Aluminium fluoride (AlF3), calcium fluoride (CaF2) and Lithium Fluoride (LiF) which play the part of reducing the melting point of the mixture. – Alumina (Al2O3). This is obtained from bauxite, a red rock-like material, which also contains a lot of unwanted substances. Bauxite is mined in Western Australia, Queensland and Northern Territory. Bauxite mining leaves a lot of barren areas which will be investigated later. Bauxite and alumina are stored in storage bunkers. To produce aluminium metal, bauxite has to be concentrated, thus removing most impurities. Bauxite is crushed and washed to remove some of the clay and sand then dried in kilns. This is because crushed bauxite is easier to transport. The ore is loaded onto trucks, railway cars, or conveyor belts and transported to ships or refinery. The concentration of bauxite into alumina is called the Bayer process as shown below. Note that the red mud from the refinery must be carefully disposed of and this will be explore in Environmental factors. The Chemical Process To refine aluminium from alumina which contains both aluminium and oxygen, electrolysis is used, in a process known as the Hall-Heroult process. Alumina has to be liquefied (it is mixed with cryolite to reduce melting temperatures) and each cell is supplied with four to six volts and 150,000 amps of electricity. The sequence of creation is: All pots are covered so that exhaust gases are drawn into a large fume duct (will be explored later). As this involves consumable anodes, the pots cannot be sealed and every time a pot is opened, a small quantity of volatile gases escapes. For the safety and comfort of workers, the potroom needs to be well ventilated and the workers need breathing protection equipment. So much electricity is needed in this process that many smelters are located near hydro-electric plants or have their own power stations such as Alcoa which mines brown coal to generate electricity that meets 50% of its energy requirements. Approximately 16 kWh of energy is needed to produce one kg of molten metal in the Hall-Heroult Process compared to a theoretical energy of 6.34 kWh per kg of molten metal. Two main causes of this are the reoxidation of aluminium metal by carbon dioxide and high temperature, as well as side reactions wasting energy. Computers are now being used to monitor each pot continuously and set a best voltage for any particular condition reducing energy consumption. Covering the top of the anodes with an insulator to prevent them burning off and improved quality of carbon anodes reduces energy loss. Australia's comparatively has a low consumption of power for each kilogram of aluminium produced. Research is currently being done to find an alternative extraction process and the two main ways are through carbon reduction and electrolysis of aluminium chloride. The Product Aluminium, Al a Group III element is the product that results. Its properties and uses were discussed above. Other than the pure substance, alloys are also made containing copper, magnesium, manganese, chromium, silicon, nickel, iron and zinc. Quality control issues include the issue that normal refining processes do not remove all the impurities from aluminium, so most commonly used industrial aluminium already has small amounts of impurities alloyed with it. Fortunately, this makes aluminium stronger but remains easy to bend. Some alloys are less suitable for extrusion than others, requiring higher pressures, allowing only low extrusion speeds and/or having less than acceptable surface finish and section complexity. Aluminium sheets which are rolled from ingots are not flat when produced from the rolling mills. To flatten it, they are stretched between heavy-duty hydraulically-operated grips. A Micro Alignment Telescope with sweep optical square is used to check the flatness within specified tolerance to ensure the quality. One random sample for each batch of the aluminium and its alloy ingots undergo an optical spectrometry analysis to ensure that the results lie within the limits determined by Australian specification. The by-products and waste products of this product are carbon dioxide and fluoride gases as well as sulphur and nitrogen oxides. Carbon dioxide gas is a greenhouse gas and large amounts of fluorides are toxic. Sulphur and nitrogen oxides are acid rain gases. Therefore these need to be controlled and this will be investigated below in Environmental Factors. The aluminium and its alloy ingots or its processed equivalents are packed and distributed through shipping. Approximately 78% of all aluminium produced in Victoria is exported. Location Australia has six aluminium smelters located in Tasmania (one), Victoria (two), New South Wales (two) and Queensland (one). However Bauxite mines are in Queensland, Northern Territory and Western Australia. This is because the energy costs are too high to set up a plant near the mines but in Tasmania, Victoria and New South Wales electricity is cheap. As lots of electricity is used in the electrolysis, it is cheaper to transport the bauxite to the smelters than to set up a smelter near the mines and pay higher costs for electricity. Other factors that are taken into account include the labour force available (generally higher near cities), transportation of the aluminium produced (so the smelter has to be near ports, railway stations or highways), geographic factors (smelters are built in residential areas where the land is cheap) and legal factors (whether the sounds and the activities such as the fumes released and the transportation of aluminium using trucks would affect nearby residential properties who could sue). Environmental By recycling aluminium, approximately 95% of the energy (approximately 2 billion kWh of electricity) otherwise required to produce the primary metal aluminium can be saved. This makes the aluminium cheaper to manufacture as well as reduce the rapid depletion of non-renewable fossil fuels to produce electricity. When land is mined for Bauxite, active reforestation must be carried out to ensure the stability of the environment as well as ensuring that the soil left over doesn't erode and cause mud slides. Extreme care must be taken with the handling and disposal of red mud from the refineries. This is usually pumped into dams which are sealed with impervious material to prevent pollution of surrounding countryside. The manufacture of aluminium produces carbon dioxide, a greenhouse gas, fluoride gas, a toxic gas and other exhaust gases (such as the sulphur and nitrate oxides) that can potentially be harmful. To combat their pollution, all pots are covered and the fumes are drawn into a fume duct where the gases pass through beds of alumina which adsorbs over 99%of the fluoride. All cryolite needs to be manufactured synthetically and suitable fluorides are expensive and so they need to be recovered. The gases then pass through dust filter bags and a dry scrubber and treatment facilities to remove the greenhouse and other gases and only clean air is released. Although manufacture of aluminium uses a lot of energy and other options to mine aluminium are being investigated (as shown above), the use of aluminium itself has saved a large amount of energy because they are strong and light. It is estimated that 1,230 litres of petrol was saved in cars that used 64 kg of aluminium instead of other metals and this saved more than five times the energy required to produce each kilogram of aluminium used in the car.

Experiment 19: Kinetics : the Rate of an Experiment

March 17, 2013 March 17, 2013 Name : Ryan annasdass arokiasamy ID : 1206875 Group Members : Chan Pei Qie,Chong Ven Yen Name : Ryan annasdass arokiasamy ID : 1206875 Group Members : Chan Pei Qie,Chong Ven Yen experiment 19 kinetics : the study of a chemical reaction experiment 19 kinetics : the study of a chemical reaction Results Part A [I-] / mol dm-3| [S2O82-] / mol dm-3| [S2O32-] / mol dm-3| Time /s| Rate of I2 formation / mol dm-3 s-1| 0. 2| 0. 2| 0. 01| 1. 25| 0. 1600| 0. 2| 0. 15| 0. 01| 13. 37| 0. 0150| 0. 2| 0. 10| 0. 01| 26. 00| 0. 0077| 0. 2| 0. 05| 0. 01| 66. 5| 0. 00075| Part B [I-] / mol dm-3| [S2O82-] / mol dm-3| [S2O32-] / mol dm-3| Time /s| Rate of I2 formation / mol dm-3| 0. 2| 0. 2| 0. 01| 3. 45| 0. 0580| 0. 15| 0. 2| 0. 01| 7. 56| 0. 0198| 0. 10| 0. 2| 0. 01| 9. 06| 0. 0110| 0. 05| 0. 2| 0. 01| 23. 91| 0. 0021| Part C Initial temperature/ OC| Final temperature/ OC| Time t /s| Rate of I2 formation / mol dm-3| 1/T (1/K)| Log t | 15| 21| 29| 0. 00690| 0. 003472| 1. 46 2| 24| 25| 20| 0. 01000| 0. 003367| 1. 301| 35| 42| 13| 0. 01538| 0. 003247| 1. 114| 45| 40| 8| 0. 02500| 0. 003145| 0. 903| Calculations & Questions Associated essay: Measuring Reaction Rate Using Volume of Gas ProducedThe effect of temperature is that it increases the rate of reaction, observed here by the higher temperatures giving a much faster reaction time a) Is reaction (2) fast or slow with respect to reaction (1)? Explain your reasoning or record any test you do to help reach your conclusion Reaction (2) is fast with respect to reaction (1). Reaction (2): I2+2 S2O32-> 2 I-+ S4O62- occurs extremely fast, I2 formed in the reaction is consumed immediately and when the limiting agent S2O32- is used up, I2 reacts with the starch indicator to form a blue color solution. ) Does reaction (1) or (2) control the time required for the blue colour to appear? Reaction (1): 2I-+ S2O82->I2+2SO42- controls the time required for the blue colour to appear as it is the I2 that will react with the starch indicator to produce the blue color solution to appear c) Calculate the rate of formation of I2 in mol dm-3 s-1 for each experiment at room temperature and plot this rate i) Against [S2O82-] at constant [I-] ii) Against [I-] at constant [S2O82-] The rate of formation of I2 can be calculated by calculating of the rate of change of the thiosulphate ion over the time taken Rate of formation of I2=? I2]t d) What are the shapes of these plots? They are straight line graphs ,with the y axis directly proportional to the x axis e) What is the significance of this? This shows that the rate is directly proportional to the concentration of [I-] and [S2O82-] and by calculating the gradient of the graph we will obtain the rate of reaction. f) Write the rate equation for reaction (1) d[I2]dt=k[S2O82-] And calculate the rate constant , k Rate = k[I-][S2O82-] k = Rate / [I-][S2O82-] k = slope / [S2O82-] k = [(0. 015-0. 0008)/(0. 15-0. 05)]Rate constant k = 0. 142 mol-1 dm3 s-1 g) Calculate the energy of activation of the reaction If we plot a graph of log t against 1/T, we can obtain the Ea by calculating the slope. Slope of the graph = Ea / 2. 303R Ea / 2. 303R = (1. 462-0. 903)(0. 003472-0. 003145) Ea / 2. 303R = 0. 559/(3. 27Ãâ€"10-4) Ea = 1709. 48 x 2. 303R Ea = 1709. 48 x 2. 303 x 8. 314 Ea = 32731. 65 J/mol Discussion Precautions Among some of the precautions taken were to wear gloves , safety goggles and lab coats to avoid any injury in case of exposure to chemicals.Secondly, there were separate measuring cylinders prepared for each solution as to not mix 2 solutions in a measuring cylinder to avoid any reactions. The persulphate was poured in rapidly as this is an extremely fast step and has to be poured all at once. Finally,when diluting the persulphate solution, it was done as accurately as possible in order to avoid a wrong concentration instead of the one intended. Conclusion Based on the experiment done as well as the analysis of the results and after doing further results, we have learned that the activation energy of the reaction is 32. 73 kJ.Furthermore, we have gained an insight into the kineti cs of a reaction, its rate, the rate constants as well as the rate of reaction. References: Martin S. Silberberg, Chemistry the Molecular Nature of Matter and Change, Fifth Edition, McGraw Hill, 2005. F. Albert Cotton, Geoffrey Wilkinson, Carlos A. Murillo, and Manfred Bochmann, Advanced Inorganic Chemistry, Sixth edition, John Wiley& Son. 1999. F. Albert Cotton, Geoffrey Wilkinson, Paul L. Gaus, Basic Inorganic Chemistry, Third Edition, John Wiley& Son. 1995. John C. Kotz, Paul M. Treichel, and Gabriela C. Weaver, Chemistry and Chemical Reactivity, Sixth Edition, Thomson 2006.