A sample of molten potassium iodide is electrolysed using graphite electrodes. The ions in the molten compound are K⁺ and I⁻.
| Electrode | Ion reaching the electrode | Element formed |
|---|---|---|
| Negative electrode | K⁺ | ? |
| Positive electrode | I⁻ | ? |
Complete the table by naming the element formed at each electrode.
98 exam-style questions on OCR GCSE Chemistry 3.4 Electrolysis, covering 3.4.1 Products formed at the electrodes in electrolysis and 3.4.2 The technique of electrolysis. Each one has a worked solution and a mark scheme showing where the marks go.