AQA Jun 2012 Paper 4 Q6

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section b answer all questions in the spaces provided do not write outside the box a benzene reacts with ethanoyl chloride in a substitution reaction to form c h coch this reaction is catalysed by aluminium chloride write equations to show the role of aluminium chloride as a catalyst in this reaction outline a mechanism for the reaction of benzene name the product c h coch marks wmp jun chem do not write outside the box b the product of the substitution reaction c h coch was analysed by mass spectrometry the most abundant fragment ion gave a peak in the mass spectrum with m z draw the structure of this fragment ion c when methylbenzene reacts with ethanoyl chloride and aluminium chloride a similar substitution reaction occurs but the reaction is faster than the reaction of benzene suggest why the reaction of methylbenzene is faster mark marks turn over for the next question turn over wmp jun chem

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