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CAIE A Level Chemistry 9701 · Polymerisation

Polymerisation: describe question

Describe7 marksChallenge

Two condensation polymers are shown below as their repeat units.

Polymer P: −O−CHX2−CHX2−O−CO−CX6HX4−COX−\ce{-O-CH2-CH2-O-CO-C6H4-CO-}

Polymer Q: −NH−[CHX2]X6−NH−CO−[CHX2]X4−COX−\ce{-NH-[CH2]6-NH-CO-[CH2]4-CO-}

(a) Identify the monomers used to form polymer P. (b) Identify the monomers used to form polymer Q. (c) Describe the polymerisation reactions for both polymers, including the type of polymerisation, the functional groups that react, and the small molecule eliminated.

0 words · 7 marks

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How this question is marked

7 marks, so the mark scheme is looking for about 7 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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