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4.2 Electrolytic processes

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Question 21
H

Why is sodium not formed at the cathode during electrolysis of aqueous sodium chloride?

[1]
A

Sodium is more reactive than hydrogen, so hydrogen is discharged instead

B

Hydrogen is more reactive than sodium, so hydrogen is discharged instead

C

Sodium ions are attracted to the anode, so they cannot reach the cathode

D

Sodium ions are held in a lattice, so they cannot reach the cathode

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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