A solution contains both silver nitrate and copper(II) nitrate. It is electrolysed using inert electrodes.
Which metal is made first at the cathode, and why?
Copper, because copper ions have a larger charge than silver ions
Silver, because silver is less reactive than copper, so its ions gain electrons more easily
Copper, because copper is more reactive than silver, so its ions gain electrons more easily
Neither, because hydrogen is made at the cathode instead
52 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.