CAIE A Level Chemistry 9701 · Halogen compounds
Chlorobenzene and chloroethane are both organic compounds containing a chlorine atom bonded to carbon.
(a) State the reagents and conditions needed to prepare chlorobenzene from benzene.
(b) Methylbenzene can also be chlorinated by this method. State the two possible organic products of this reaction.
(c) Explain, in terms of structure and bonding, why chlorobenzene is far less reactive than chloroethane towards nucleophilic substitution.
7 marks, so the mark scheme is looking for about 7 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.
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