CAIE A Level Chemistry 9701 · Nitrogen compounds
A student investigates the reaction of 1-bromopropane with ammonia in ethanol under pressure. Two experiments are performed.
Experiment 1: Excess ammonia is used. Experiment 2: A 1:1 mole ratio of 1-bromopropane to ammonia is used.
Compare the mixture of organic products obtained in each experiment. Explain the reasons for any differences.
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.