A technician connects two inert electrodes to a direct current supply and tests an ionic compound, Y.
The same potential difference and electrode spacing are used for both tests. Both tests are carried out at 20 °C.
| Form of compound Y | Current in A |
|---|---|
| solid Y | 0.00 |
| Y dissolved in water | 0.26 |
The technician claims that Y must be heated until it melts before it can be electrolysed.
Explain the results and evaluate the technician's claim.
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.