A student investigated the electrolysis of copper sulfate solution. During the process, copper is deposited at the negative electrode. The table below shows the mass of copper produced over time.
| Time (minutes) | Mass of copper (g) |
|---|---|
| 0 | 0.00 |
| 10 | 0.08 |
| 20 | 0.16 |
| 30 | 0.24 |
| 40 | 0.32 |
| 50 | 0.40 |
Assuming the rate of deposition of copper remains constant, determine the mass of copper that would be produced after 25 minutes.
12 exam-style questions on AQA GCSE Chemistry 4.3 Electrolysis, covering 4.3.1 The process of electrolysis, 4.3.2 Electrolysis of molten ionic compounds, 4.3.3 Using electrolysis to extract metals, 4.3.4 Electrolysis of aqueous solutions, and 4.3.5 Representation of reactions at electrodes as half equations (HT only). Each one has a worked solution and a mark scheme showing where the marks go.