A-LevelChemistryOrganic synthesisMay/June 2018Paper 1 Q281 Mark
Ethanal, CH3CHO, is used to make product R in a three-stage synthesis. CH3CHO →product P (HCN/NaCN) →product Q (H2SO4(aq), reflux) →product R (conc. H2SO4 (a few drops)) Two molecules of Q react to give one molecule of R plus two molecules of water. R has two ester functional groups in each molecule. R does not react with sodium. What is the empirical formula of R?
ACHO
BC3H4O2
CC3H5O2
DC6H10O5
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The correct answer is B. This question tests the candidate's understanding of organic synthesis within the Chemistrysyllabus. The examiner's mark scheme requires...
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