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7.2 Reactions of alkenes and alcohols

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Question 20

An alcohol is oxidised to produce substance P.

The table gives information about aqueous solutions of substance P and hydrochloric acid.

SolutionSoluteConcentration in mol/dm3\text{mol/dm}^3mol/dm3pH
PCH3CH2CH2COOH\text{CH}_3\text{CH}_2\text{CH}_2\text{COOH}CH3​CH2​CH2​COOH0.102.9
QHydrochloric acid0.101.0
a.

Give the name of substance P and the name of the alcohol that was oxidised.

[2]
b.

Explain why solution P has a pH below 7 but a higher pH than solution Q.

[4]
Markscheme

7.2 Reactions of alkenes and alcohols Questions

  1. GCSE
  2. /Chemistry
  3. /7.2 Reactions of alkenes and alcohols

97 exam-style questions on AQA GCSE Chemistry 7.2 Reactions of alkenes and alcohols, covering 7.2.1 Structure and formulae of alkenes, 7.2.2 Reactions of alkenes, 7.2.3 Alcohols, 7.2.4a Carboxylic acids, and 7.2.4b Carboxylic acids as weak acids. Each one has a worked solution and a mark scheme showing where the marks go.

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