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3.4 Electrolysis

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Question 2
F

Potassium bromide solution is electrolysed using inert electrodes.

What is made at the cathode, and why?

[1]
A

Hydrogen, because potassium is more reactive than hydrogen

B

Hydrogen, because potassium is less reactive than hydrogen

C

Potassium, because potassium ions are positive

D

Potassium, because potassium is more reactive than hydrogen

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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