A-LevelChemistryCarbonyl compoundsMay/June 2018Paper 1 Q271 Mark
Which statement about butanone is correct?
AButanone can be dehydrated by concentrated sulfuric acid to give CH2=CHCH=CH2.
BButanone gives a positive result with Tollens' reagent.
CButanone reacts with HCN by an electrophilic addition mechanism.
DButanone reacts with NaBH4 to give a chiral product.
✓ Correct Answer
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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