AQA Jun 2016 Paper 1 Q4

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do not write outside the box a octane c h is an important compound in petrol a i identify the homologous series to which octane belongs mark a ii write an equation to show the complete combustion of c h mark a iii an isomer of octane used to improve the performance of car engines is shown ch ch h c c ch hc ch ch give the iupac name of this isomer mark b compound x is produced when an alkane is cracked ch ch c c b i give the iupac name for compound x mark b ii one molecule of an alkane is cracked to produce one molecule of compound x one molecule of octane and one molecule of ethene deduce the molecular formula of this alkane mark wmp jun chem b iii name the type of cracking that produces a high yield of compound x give two conditions required for this process do not write outside the box marks type of cracking conditions question continues on the next page turn over wmp jun chem b iv compound x has several isomers the structure of x is repeated here do not write outside the box ch ch c c draw the displayed formula of a chain isomer a position isomer and a functional group isomer of compound x marks type of isomer displayed formula of isomer of compound x chain position functional group wmp jun chem

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