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4.3 Electrolysis

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Question 5

A student heats copper(II) oxide with carbon powder in one test tube, and aluminium oxide with carbon powder in another test tube.

Which statement is correct?

[1]
A

Only the aluminium oxide is reduced, because aluminium is more reactive than carbon

B

Both oxides are reduced, because carbon is more reactive than both metals

C

Neither oxide is reduced, because carbon is less reactive than both metals

D

Only the copper(II) oxide is reduced, because copper is less reactive than carbon

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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