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3.4 Electrolysis

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Question 14
F

Molten sodium hydroxide, NaOH\mathrm{NaOH}NaOH, contains Na+\mathrm{Na^{+}}Na+ ions and OH−\mathrm{OH^{-}}OH− ions. No water is present.

Molten sodium hydroxide is electrolysed using inert electrodes.

Which products are made?

[1]
A

Cathode: sodium; anode: oxygen

B

Cathode: hydrogen; anode: oxygen

C

Cathode: sodium; anode: hydrogen

D

Cathode: hydrogen; anode: sodium

Markscheme

3.4 Electrolysis Questions

  1. GCSE
  2. /Chemistry
  3. /3.4 Electrolysis

52 exam-style questions on OCR GCSE Chemistry 3.4 Electrolysis, covering 3.4.1 Products formed at the electrodes in electrolysis and 3.4.2 The technique of electrolysis. Each one has a worked solution and a mark scheme showing where the marks go.

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