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3.4 Electrolysis

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Question 20
F

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?

[1]
A

Copper, because copper ions have a larger charge than silver ions

B

Silver, because silver is less reactive than copper, so its ions gain electrons more easily

C

Copper, because copper is more reactive than silver, so its ions gain electrons more easily

D

Neither, because hydrogen is made at the cathode instead

Markscheme

3.4 Electrolysis Questions

  1. GCSE
  2. /Chemistry
  3. /3.4 Electrolysis

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.

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