CAIE A Level Chemistry 9701 · Carbonyl compounds
A student is given a sample of butanone, . The student adds alkaline iodine solution, with , and warms the mixture. A yellow precipitate forms.
Compare the reaction of butanone with the reaction of propanone, , under the same conditions. In your answer, refer to the structure of the carbonyl compounds, the organic product, and the inorganic product.
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.