Chemistry 9701 · AS & A Level · Polymerisation

Polymerisation — practice question

The group of polymers known as polycarbonates is produced by reacting carbonyl dichloride, $\text{COCl}_2$, with a diol.
(a(i))[1]

Deduce which type of polymerisation is illustrated here.

(a(ii))[1]

Draw a single repeat unit of Nalgene®.

(a(iii))[1]

Nalgene® is a strong, tough polymer. Identify two kinds of intermolecular force that account for these properties of Nalgene®.

(b)[2]

Proteins are polymers made from amino acids. Complete the table to show the ways in which protein secondary and tertiary structures are stabilised.

(c)[2]

Explain the importance of hydrogen bonding in DNA for the accurate replication of genetic information.

(d)[1]

Many polymers are degradable. State two different ways in which some polymers may be degraded.

(e(i))[2]

Draw the structures of the two other organic products that are formed.

(e(ii))[1]

Using the 3-letter abbreviations for the amino acids listed in the Data Booklet, complete the sequence of the cyclic peptide, B.

(e(iii))[1]

Name two analytical techniques that might be used to separate these amino acids.

(i)[2]

Draw the structures of the other two organic products that are formed.

(ii)[1]

Using the 3-letter abbreviations for the amino acids provided in the Data Booklet, complete the sequence of cyclic peptide, $B$.

(iii)[1]

Name two analytical techniques that can separate these amino acids.

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