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3.4 Electrolysis

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Question 7
F

A solution contains Cu2+\mathrm{Cu^{2+}}Cu2+, Na+\mathrm{Na^{+}}Na+, Cl−\mathrm{Cl^{-}}Cl− and SO42−\mathrm{SO_{4}^{2-}}SO42−​ ions dissolved in water. It is electrolysed using inert electrodes.

Which products are made at the start of the electrolysis?

[1]
A

Cathode: copper; anode: chlorine

B

Cathode: copper; anode: oxygen

C

Cathode: hydrogen; anode: chlorine

D

Cathode: sodium; anode: chlorine

Markscheme

3.4 Electrolysis Questions

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

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.

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