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7.3 Synthetic and naturally occurring polymers

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Question 39

An alkene monomer has the formula CH2=C(CH3)CH2CH3\text{CH}_2{=}\text{C}(\text{CH}_3)\text{CH}_2\text{CH}_3CH2​=C(CH3​)CH2​CH3​.

A student proposes that its addition polymer has the repeating unit [-CH(CH3)-CH(CH2CH3)-]n\left[\text{-CH}(\text{CH}_3)\text{-CH}(\text{CH}_2\text{CH}_3)\text{-}\right]_n[-CH(CH3​)-CH(CH2​CH3​)-]n​.

Explain why the proposed repeating unit is incorrect. Give the correct repeating unit.

[3]
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7.3 Synthetic and naturally occurring polymers Questions

  1. GCSE
  2. /Chemistry
  3. /7.3 Synthetic and naturally occurring polymers

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.

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