Chemistry 9701 · AS & A Level · Polymerisation

Polymerisation — practice question

Polymers are formed when monomers are linked together by either addition or condensation reactions.
(a)[2]

Name one example of a synthetic addition polymer and one example of a synthetic condensation polymer. addition polymer condensation polymer

(b(i))[1]

Addition polymers are long-term pollutants in the environment, whereas condensation polymers are often biodegradable. What type of reaction takes place when condensation polymers biodegrade?

(b(ii))[2]

Identify two functional groups that can undergo this reaction type.

(c)[2]

Petroleum is a non-renewable resource from which a wide variety of useful polymers is currently manufactured. Polymer research is now considering renewable plant material as a possible source of monomers. Two monomers derived from plants are shown: $\mathrm{CH_3CH(OH)COOH}$ and $\mathrm{HOCH_2COOH}$. Draw the displayed formula of the repeat unit of a polymer using both monomers.

(d)[1]

Monomers from plant sources do not usually form addition polymers. Suggest why this is.

(e(i))[2]

The diagrams show sections of two polymers $Y$ and $Z$. What would be the main force between the chains in each polymer? $Y$ $Z$

(e(ii))[1]

Which of these two polymers is likely to be the more hydrophilic? Explain your answer.

Worked solution & mark scheme

This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: Any addition polymer, for example polythene

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