CAPE Chemistry Unit 2 · 2012 · Paper 1 · Question Q43

A balanced equation for the production of oxygen from ozone is

1. (A)\text{O}_3\text{(g)} + \text{Cl}^\bullet\text{(g)} \rightarrow \text{O(g)} + \text{ClO}_2^\bullet\text{(g)}
2. (B)\text{O}_3\text{(g)} + \text{Cl}^\bullet\text{(g)} \rightarrow \text{ClO}^\bullet\text{(g)} + \text{O}_2\text{(g)}
3. (C)\text{O}_3\text{(g)} + \text{Cl}^-\text{(g)} \rightarrow \text{O(g)} + \text{ClO}_2^-\text{(g)}
4. (D)\text{O}_3\text{(g)} + \text{Cl}^-\text{(g)} \rightarrow \text{O}_2\text{(g)} + \text{ClO}^-\text{(g)}

This question uses a figure or table from the paper — you'll see it when you practise.