CAIE A Level Chemistry 9701 · Carbonyl compounds
Compare the reactions of aldehydes and ketones with Tollens' reagent and with hydrogen cyanide (in the presence of KCN catalyst). In your answer, include typical observations and explain any differences in reactivity. State the type of organic product formed in each case.
5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.
Compare means: Give similarities or differences between two things, and say which side each point belongs to. Write each point as a pair, for example: A is X, whereas B is Y. Two separate descriptions rarely earn the marks.
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.