CAIE A Level Chemistry 9701 · An introduction to organic chemistry
Compare electrophilic substitution and addition-elimination mechanisms in organic reactions. In your answer, refer to the type of substrate each mechanism typically occurs with, the nature of the attacking species, and the key steps in each mechanism.
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.