In an industrial wastewater treatment process, hydrogen peroxide (H2O2\text{H}_2\text{O}_2H2O2) is reacted with acidified iron(II) ions to generate hydroxyl radicals. The simplified net ionic equation for this redox process is:
H2O2(aq)+2Fe2+(aq)+2H+(aq)→2Fe3+(aq)+2H2O(l) \text{H}_2\text{O}_2(\text{aq}) + 2\text{Fe}^{2+}(\text{aq}) + 2\text{H}^+(\text{aq}) \rightarrow 2\text{Fe}^{3+}(\text{aq}) + 2\text{H}_2\text{O}(\text{l}) H2O2(aq)+2Fe2+(aq)+2H+(aq)→2Fe3+(aq)+2H2O(l)What happens to the hydrogen peroxide in this reaction?
It is oxidised.
It is reduced.
It is neutralised.
It acts as a homogeneous catalyst.
55 exam-style questions on OCR GCSE Chemistry Types of chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.