A team testing simple cells for a corrosion-warning device uses the same electrolyte and conditions for each test. Metal K is the least reactive of the three metals, and metal N is the most reactive.
| Metals used as electrodes | Voltage in V |
|---|---|
| K and L | 0.42 |
| L and N | 0.75 |
What is the voltage of a cell with metal K and metal N electrodes, using the same electrolyte and conditions?
0.84 V0.84\ \text{V}0.84 V
0.33 V0.33\ \text{V}0.33 V
1.50 V1.50\ \text{V}1.50 V
1.17 V1.17\ \text{V}1.17 V
90 exam-style questions on AQA GCSE Chemistry 5.2 Chemical cells and fuel cells, covering 5.2.1 Cells and batteries, 5.2.2a Fuel cells, and 5.2.2b Half equations for hydrogen fuel cells. Each one has a worked solution and a mark scheme showing where the marks go.