AQA Jun 2013 Paper 4 Q9

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do not write outside the box imipramine has been prescribed as an antidepressant the structure of imipramine is shown below h c ch a n h c ch h c n b h c ch a the medicine is usually supplied as a salt the salt is formed when one mole of imipramine reacts with one mole of hydrochloric acid suggest why the nitrogen atom labelled b is more likely to be protonated than the nitrogen atom labelled a when the salt is formed marks b deduce the molecular formula of imipramine and give the number of peaks in its c n m r spectrum marks end of questions wmp jun chem

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