A-LevelChemistryCarbonyl compoundsOct/Nov 2017Paper 1 Q391 Mark
Compound M is an important ingredient in perfume. [Figure 39.1 - skeletal formula of compound M] M reacts with HCN. Which statements about this reaction are correct? 1 A small amount of NaOH will speed up the reaction. 2 The reaction is initiated by the transfer of a proton to one of the C=O groups. 3 Both of the C=O groups react with HCN.
A1, 2 and 3 are correct
B1 and 2 only are correct
C2 and 3 only are correct
D1 only is correct
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The correct answer is D. This question tests the candidate's understanding of carbonyl compounds within the Chemistrysyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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