CIE Jun 2014 v2 Paper 2 Q4

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PMT Crude oil is processed to give a wide variety of hydrocarbons. (a) Give the names of one physical process and one chemical process carried out during the processing of crude oil. physical processchemical process[2] (b) Alkanes and alkenes can both be obtained from crude oil. (i) Explain why alkanes are unreactive.[2] (ii) State the bond angles in a molecule of ethane,ethene.[1] (iii) State the shape of each molecule in terms of the arrangement of the atoms bonded to each carbon atom. ethaneethene[1] (iv) Explain why these molecules have different shapes in terms of the carbon-carbon bonds present.[1] (c) (i) Use a series of equations to describe the mechanism of the reaction of ethane with chlorine to form chloroethane. Name the steps in this reaction.[5] (ii) Write an equation to show how butane could be produced as a by-product of this reaction.[1]UCLES 2014 9701/22/M/J/14 [Total: 13] [Turn over<br />

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