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Electrolysis

Electrolysis

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Question 8

The ionic half-equation for the formation of hydrogen at the negative electrode during the electrolysis of dilute hydrochloric acid is:

2H++2e−→H2 2\text{H}^+ + 2\text{e}^- \rightarrow \text{H}_2 2H++2e−→H2​

In one experiment, a charge of 0.0350 faraday0.0350\text{ faraday}0.0350 faraday is passed through the solution.

a.

Calculate the amount, in moles, of hydrogen formed.

[2]
b.

Calculate the volume of hydrogen formed at room temperature and pressure (rtp). [The molar volume of a gas is 24 dm324\text{ dm}^324 dm3 at rtp.] Give the unit in your answer.

[2]
Markscheme

Electrolysis Questions

  1. IGCSE
  2. /Chemistry
  3. /Electrolysis

21 exam-style questions on Edexcel IGCSE Chemistry Electrolysis. Each one has a worked solution and a mark scheme showing where the marks go.

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