AQA Jun 2011 Paper 4 Q7

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section b answer all questions in the spaces provided do not write outside the box a a i organic chemists use a variety of methods to distinguish between compounds these methods include analytical and spectroscopic techniques the following compounds can be distinguished by observing what happens in test tube reactions for each pair suggest a suitable reagent or reagents that could be added separately to each compound in order to distinguish them describe what you would observe with each compound ch o ch ho ch ch marks wmp jun chem do not write outside the box a ii h c ch ch cl ch ch marks a iii ch h oh oh h ch h c c c h h c c c h ch h h ch h marks question continues on the next page turn over wmp jun chem do not write outside the box b compounds j and k can also be distinguished using spectroscopic techniques such as h n m r ch h oh oh h ch h c c c h h c c c h ch h h ch h b i name compound j give the total number of peaks in the h n m r spectrum of j state the splitting pattern if any of the peak for the protons labelled a marks b ii name compound k give the total number of peaks in the h n m r spectrum of k state the splitting pattern if any of the peak for the protons labelled b marks wmp jun chem

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