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4.2 Electrolytic processes

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Question 7
F

The table shows whether four substances conduct electricity.

SubstanceAs a solidWhen moltenMixed with water
Wconductsconductsdoes not dissolve
Xdoes not conductconductsconducts
Ydoes not conductdoes not conductdoes not conduct
Zdoes not conductdoes not conductconducts

Statement 1: W is an electrolyte, because it conducts when molten

Statement 2: X is an ionic compound, and it is decomposed at the electrodes when molten

Statement 3: Z must be an ionic compound, because its solution conducts Which statements are correct?

[1]
A

2 only

B

1 and 2 only

C

2 and 3 only

D

1, 2 and 3

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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