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4.3 Electrolysis

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Question 4

During electrolysis of molten potassium iodide, which change occurs at the negative electrode?

[1]
A

Iodide ions lose electrons

B

Potassium ions lose electrons

C

Potassium ions gain electrons

D

Iodide ions gain electrons

Markscheme

4.3 Electrolysis Questions

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

76 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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