Chemistry 9701 · AS & A Level · Polymerisation

Polymerisation — practice question

Polyhydroxyamide is a fire-resistant polyamide produced from the two monomers, $F$ and $G$.
(a(i))[2]

Predict how many peaks will appear in the carbon-13 NMR spectra of $F$ and $G$.

(a(ii))[2]

Draw the repeat unit of polyhydroxyamide. The amide bond should be displayed in full.

(b)[2]

When poly(ethene) is made from ethene, many bonds are broken and formed. Place one tick (✓) in each row of the table to show the bond types broken and formed in this process.

(c)[2]

Addition polymers may be grouped into two types. Homopolymer - a polymer consisting of the same monomer unit. Copolymer - a polymer consisting of two or more different monomer units. The reaction of propene, $\text{CH}_3\text{CH}=\text{CH}_2$, with phenylethene, $\text{C}_6\text{H}_5\text{CH}=\text{CH}_2$, produces a copolymer. Draw a length of the chain of this copolymer that includes one molecule of each monomer.

(d(i))[1]

Polyalkenes biodegrade very slowly. Explain why, using the structures of the polymers as your reference.

(d(ii))[2]

Some polymers degrade in the environment. Describe two processes by which this happens.

Worked solution & mark scheme

This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: Accurate peak count for F and G

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