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4.3 Electrolysis

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Question 2

A student pushes two graphite electrodes into solid zinc chloride and connects them to a direct current supply. No current flows.

Which change would allow the zinc chloride to be electrolysed?

[1]
A

Heating the zinc chloride until it melts

B

Increasing the voltage of the power supply

C

Using platinum electrodes instead of graphite

D

Grinding the zinc chloride into a fine powder

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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