Complete the half-equation for the reduction reaction taking place at the cathode in an acidic hydrogen-oxygen fuel cell.
O2+………H++……⋯→2H2O \text{O}_2 + \dots\dots\dots \text{H}^+ + \dots\dots\dots \rightarrow 2\text{H}_2\text{O} O2+………H++……⋯→2H2O17 exam-style questions on Edexcel GCSE Chemistry 6.4 Chemical cells and fuel cells, covering 6.4.1 Chemical cells and fuel cells. Each one has a worked solution and a mark scheme showing where the marks go.