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4.3 Electrolysis

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Question 21
H

Which statement about the reaction at the cathode during electrolysis is correct?

[1]
A

Negative ions gain electrons at the cathode, so they are oxidised

B

Positive ions gain electrons at the cathode, so they are reduced

C

Positive ions lose electrons at the cathode, so they are oxidised

D

Negative ions lose electrons at the cathode, so they are reduced

Markscheme

4.3 Electrolysis Questions

  1. GCSE
  2. /Chemistry
  3. /4.3 Electrolysis

40 exam-style questions on AQA GCSE Chemistry 4.3 Electrolysis, covering 4.3.1a The process of electrolysis, 4.3.1b Half equations in electrolysis, 4.3.2 Electrolysis of molten ionic compounds, 4.3.3 Using electrolysis to extract metals, 4.3.4 Electrolysis of aqueous solutions, and 4.3.5 Representation of reactions at electrodes as half equations. Each one has a worked solution and a mark scheme showing where the marks go.

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