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CAIE AS Chemistry 20 Polymerisation

Practise converting monomers to addition-polymer repeat units and recovering monomer structures from polymers, recognising alkene addition and non-biodegradable products.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

20. Polymerisation question 1

[Maximum number: 3]

Organic compounds can be distinguished using chemical tests and analytical techniques.

Question (a)

(a)

D2 forms polymer Z when heated gently.

[ 3 ]

Question (i)

(i)

Identify the type of polymer that forms from D2.

[ 1 ]

Question (ii)

(ii)

Draw one repeat unit of polymer Z.

[ 2 ]

20. Polymerisation question 2

[Maximum number: 1]

X reacts with another reagent to form Y.

Molecules of Y react together to form addition polymer Z. The diagram shows the repeat unit of polymer Z.

repeat unit of polymer Z

repeat unit of polymer Z

Draw the structural formula of monomer Y.

20. Polymerisation question 3

[Maximum number: 3]

Fig. 4.1 shows a possible synthesis of propene, C3H6\mathrm{C}_{3} \mathrm{H}_{6}.

Fig. 4.1

Fig. 4.1

Question (a)

(a)

Under suitable conditions, propene polymerises to form poly(propene).

Poly(propene) exhibits stereoisomerism.

[ 3 ]

Question (i)

(i)

Identify the type of polymerisation that forms poly(propene) from propene.

[ 1 ]

Question (ii)

(ii)

State two difficulties associated with the disposal of poly(propene).

1

2

[ 2 ]
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