The electrolysis of aqueous copper(II) sulfate solution can be carried out using active copper electrodes.
Which option describes what happens to the mass of the copper electrodes during this electrolysis?
The mass of both electrodes decreases
The mass of both electrodes increases
The mass of one electrode increases, and the mass of one electrode decreases
The mass of one electrode increases, and the mass of one electrode stays the same
34 exam-style questions on OCR GCSE Chemistry Electrolysis. Each one has a worked solution and a mark scheme showing where the marks go.