CAIE A Level Chemistry 9701 · Nitrogen compounds
A student wants to prepare a primary amine from 1-bromopropane. The student mixes 1-bromopropane with an excess of ammonia dissolved in ethanol and heats the mixture under pressure in a sealed tube.
Explain how the primary amine is formed in this reaction, and why heating under pressure is necessary.
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.
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.