AQA Jun 2016 Paper 4 Q9

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b draw the structure of compound s for each of steps and give a reagent and one condition other than heat do not write outside the box marks turn over wmp jun chem do not write outside the box compound r contains carbon and hydrogen by mass the remainder is oxygen the mass spectrum of r contains a molecular ion peak at m z a use these data to show that the molecular formula of r is c h o marks b the infrared spectrum of r c h o is shown in figure figure transmittance wavenumber cm the proton n m r spectrum of r contains five peaks the chemical shift values integration ratios and splitting patterns of these peaks are given in table chemical shift ppm integration ratio table splitting patterns triplet singlet singlet triplet singlet wmp jun chem

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