Tuesday, May 21, 2013

Core 1 Notes: Production of Materials

1)Fossils fuels provide both vital force & raw materials such(prenominal) as ethene, for production of other(a) substancesIdentify the industrial source of ethylene from the cracking of some of the fractions from the finish of bumpycatalytic cracking is the border whereby full(prenominal) molecular(a) weight fractions ar wiped out(p) dismantle to depression molecular weight unrivaleds. This process is use in petroleum refineries where crude oil is broken down to smaller alkenes and alkanes, until ethene, propene, (or both) are breeded. Catalytic Cracking allows greater sidetrack of elevated-demand products. Identify that ethylene, because of the high matchivity of its bifurcate bond, is readily trans phase angleed into umpteen helpful productsEthylene, because of the high responsiveness of its double bond, tin unionise many useful products, such as plastics (polyethylene). For example, ethene can fight back with body of water to recoil ethanol, with a H3PO4 throttle at 300oC. ethylene can react with oxygen in the front of an Ag catalyst and at 250oC, to form ethylene oxide, which is push treat with dilute acerb solution to form ethylene glycol.
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ethylene can besides react with oxygen, with a bruiser chloride catalyst and at 150oC, to form vinyl chloride (chloro-ethene)Identify that ethylene serves as a monomer from which polymers are madeEthylene is the monomer which is born-again into the polymer polyethylene by the process of polymerization (chemical reaction where many small identical molecules get married together to form one large(p) molecule). Identify data, design and actualize a first-hand probe to compare the reactivities of appropriate alkenes with the check alkanes in bromine water and iodine in solutionAlkanes burn down in air to form CO2 and H2O, and liberate large amounts of ignite in the process. Alkanes excessively react with (or decolourise) Cl, Br, and I, very slowly, in the presence of ultra-violet light. However without UV-light no rxn occurs. However, alkenes are much more(prenominal) reactive, If you deprivation to get a full essay, order it on our website: Orderessay

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