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3.4 Electrolysis

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Question 10
F

Sodium chloride solution is electrolysed using inert electrodes. Universal indicator is added to the solution. The solution is green at the start.

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What happens to the colour of the indicator near each electrode?

[1]
A

Near X: it turns purple; near Y: it is bleached

B

Near X: it turns red; near Y: it turns purple

C

Near X: it is bleached; near Y: it turns purple

D

Near X: it stays green; near Y: it turns red

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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