AQA Jan 2012 Paper 2 Q6

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the table shows the structures and names of three compounds with mr do not write outside the box compound formula ch ch ch cho ch ch ch ch ch ch ch coch name butanal pentane butanone a explain why mr values measured to five decimal places cannot distinguish between compounds and but can distinguish between compounds and marks b a simple chemical test using either fehling s solution or tollens reagent can be used to distinguish between compound and compound choose one of these two reagents and state what you would observe with each of compound and compound chosen reagent observation with compound observation with compound marks turn over wmp jan chem

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