CAIE A Level Chemistry 9701 · Polymerisation
A polymer is produced by heating a mixture of ethane-1,2-diol and hexanedioic acid in the presence of a catalyst.
Explain the formation of this polymer, including the type of reaction, the functional groups involved, the chemical linkage formed, and the repeat unit of the polymer.
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.