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4.3 Electrolysis

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Question 3

A laboratory has four electrolytes: magnesium sulfate solution, copper(II) chloride solution, silver nitrate solution and copper(II) sulfate solution. Each solution is electrolysed using inert electrodes.

Which electrolyte produces hydrogen at the cathode?

[1]
A

Copper(II) chloride solution

B

Magnesium sulfate solution

C

Silver nitrate solution

D

Copper(II) sulfate solution

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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