A researcher investigates two routes for producing a polyester.
| Route | Molecules used | Functional groups in each molecule |
|---|---|---|
| 1 | A only | one -OH\text{-OH}-OH group and one -COOH\text{-COOH}-COOH group |
| 2 | B and C | B has two -OH\text{-OH}-OH groups; C has one -COOH\text{-COOH}-COOH group |
Which route could produce a polyester containing long chains? Explain your answer and why the other route could not produce long chains.
94 exam-style questions on AQA GCSE Chemistry 7.3 Synthetic and naturally occurring polymers, covering 7.3.1 Addition polymerisation, 7.3.2 Condensation polymerisation, 7.3.3 Amino acids, and 7.3.4 DNA (deoxyribonucleic acid) and other naturally occurring polymers. Each one has a worked solution and a mark scheme showing where the marks go.