A conservation laboratory is comparing metals considered for making replacement fittings. The team uses iron as the reference metal in a simple cell with each candidate metal. Preliminary tests establish that every candidate is less reactive than iron. The same electrolyte and conditions are used for each cell. The table gives the measured voltage for each candidate.
| Candidate metal | Voltage of cell in V |
|---|---|
| A | 0.82 |
| B | 0.24 |
| C | 1.31 |
| D | 0.57 |
Which candidate metal is the most reactive?
The metal that produced 0.24 V
The metal that produced 0.82 V
The metal that produced 0.57 V
The metal that produced 1.31 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.