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4.2 Electrolytic processes

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Question 25
H

The blue colour of copper sulfate solution remains approximately constant during electrolysis with copper electrodes because

[1]
A

sulfate ions are discharged at the anode, so copper ions stay in solution

B

hydrogen is discharged at the cathode instead, so copper ions are not removed

C

copper ions are not discharged at either electrode, so none are removed

D

copper ions discharged at the cathode are replaced by copper ions from the anode

Markscheme

4.2 Electrolytic processes Questions

  1. GCSE
  2. /Chemistry
  3. /4.2 Electrolytic processes

52 exam-style questions on Edexcel GCSE Chemistry 4.2 Electrolytic processes, covering 4.2.1 Electrolytes and the process of electrolysis, 4.2.2 Products of electrolysis using inert electrodes, 4.2.3 Half equations, oxidation and reduction in electrolysis, and 4.2.4 Electrolysis of copper sulfate and purifying copper. Each one has a worked solution and a mark scheme showing where the marks go.

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