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Question 6

Which equation does not represent a disproportionation reaction?

A

2H2O2→2H2O+O22\text{H}_2\text{O}_2 \rightarrow 2\text{H}_2\text{O} + \text{O}_22H2​O2​→2H2​O+O2​

B

2Cu+(aq)→Cu2+(aq)+Cu(s)2\text{Cu}^+(\text{aq}) \rightarrow \text{Cu}^{2+}(\text{aq}) + \text{Cu}(\text{s})2Cu+(aq)→Cu2+(aq)+Cu(s)

C

3Cl2+6KOH→KClO3+5KCl+3H2O3\text{Cl}_2 + 6\text{KOH} \rightarrow \text{KClO}_3 + 5\text{KCl} + 3\text{H}_2\text{O}3Cl2​+6KOH→KClO3​+5KCl+3H2​O

D

2H2S+SO2→3S+2H2O2\text{H}_2\text{S} + \text{SO}_2 \rightarrow 3\text{S} + 2\text{H}_2\text{O}2H2​S+SO2​→3S+2H2​O

Markscheme

Redox Questions

  1. A Level
  2. /Chemistry
  3. /Redox

26 exam-style questions on OCR A A Level Chemistry Redox. Each one has a worked solution and a mark scheme showing where the marks go.

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