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4.3 Electrolysis

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Question 29
H

Which change would produce hydrogen instead of a metal at the negative electrode?

[1]
A

Using copper electrodes in place of the graphite electrodes

B

Increasing the temperature of the copper chloride solution

C

Replacing the copper chloride with magnesium chloride

D

Increasing the concentration of the copper chloride solution

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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