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3.4 Electrolysis

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Question 11

A teacher plans a demonstration using inert electrodes. She wants the gas collected at the cathode to give a squeaky pop with a lit splint, and the gas collected at the anode to relight a glowing splint.

Which solution should she electrolyse?

[1]
A

Copper(II) bromide solution

B

Sodium nitrate solution

C

Copper(II) nitrate solution

D

Potassium iodide solution

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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