CAIE A Level Chemistry 9701 · Polymerisation

Polymerisation: compare question

Compare7 marksChallenge

A polymer is formed by addition polymerisation of the monomer CHX2=CHCl\ce{CH2=CHCl}.

(a) State the name of this polymer and draw the structure of its repeat unit.

(b) A sample of the polymer is burned in air. State one harmful product that could be formed and explain why it is harmful.

(c) The polymer is not biodegradable. Suggest one reason why poly(alkene)s are not biodegradable.

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.

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.

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