Explain4 marksStandard
Explain why chlorobenzene is much less reactive than chloroethane in nucleophilic substitution reactions. In your answer, also describe how chlorobenzene can be prepared from benzene.
CAIE A Level Chemistry 9701 · Halogen compounds
Halogen compounds: explain question
How this question is marked
4 marks, so the mark scheme is looking for about 4 separate creditworthy points. Making the same point twice in different words earns it once.
Explain means: Give the reasons or the mechanism: why or how something happens. Link each point to the next with because, so or which means. A list of facts with no links usually loses the reasoning marks.
More Halogen compounds questions
- 5 marks · Compare the reactivity of chloroethane and chlorobenzene towards nucleophilic substitution. In your answer, explain the difference in…
- 4 marks · A student plans to prepare 4-chloromethylbenzene from methylbenzene using chlorine and an anhydrous aluminium chloride catalyst. (a) State…
- 5 marks · Chloroethane and chlorobenzene both contain a chlorine atom bonded to carbon. Compare the reactivity of chloroethane with that of…
- 4 marks · A student is given a sample of 2-chloro-2-methylpropane, (CH3)3CCl. Explain why this compound is classified as a tertiary halogenoalkane…
- 4 marks · A student wants to prepare a sample of bromoethane, C2H5Br, starting from ethanol, C2H5OH. State two different reagents and conditions…
- 4 marks · Chloroethane and chlorobenzene both contain a C–Cl bond. Explain why chloroethane reacts readily with aqueous silver nitrate to give a…
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.