Chemistry 9701 · AS & A Level · Electrochemistry

Electrochemistry — practice question

Three reaction equations involving chlorine or chlorine compounds are given below. 1. $2\text{KClO}_3 \rightarrow 2\text{KCl} + 3\text{O}_2$ 2. $4\text{KClO}_3 \rightarrow 3\text{KClO}_4 + \text{KCl}$ 3. $6\text{KOH} + 3\text{Cl}_2 \rightarrow 3\text{H}_2\text{O} + 5\text{KCl} + \text{KClO}_3$ Which statement is correct for these equations?

  • AEquation 1 describes the formation of a compound used to kill bacteria in drinking water.
  • BEquation 1 does not represent a redox reaction.
  • CEquation 2 describes the formation of potassium chlorate(IV).
  • DEquations 2 and 3 both represent disproportionation reactions.

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