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CAIE A Level Chemistry 9701 · Polymerisation

Polymerisation: describe question

Describe5 marksStandard

A polyester is formed by the reaction between ethane-1,2-diol and hexanedioic acid.

Describe the formation of this polyester. In your answer, include:

  • the type of polymerisation and the type of linkage formed
  • the other product of the reaction
  • the structure of the repeat unit
  • the type of intermolecular forces between the polymer chains
  • one use of this polyester
0 words · 5 marks

No account needed for your first marks. Your answer is used only to mark it.

How this question is marked

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.

Describe means: Say what happens or what something is like, in order and with detail. You are not being asked why. If there is data, quote it: name the trend, then give figures with units at the points where it changes.

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