A-LevelChemistryElectrochemistry9701/12 · Oct/Nov 2009 · Q151 Mark

During electrolysis of brine in a diaphragm cell, chlorine, hydrogen and sodium hydroxide are produced. What is the molar ratio of these products? [Figure 15.1]

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Achlorine: 1, hydrogen: 1, sodium hydroxide: 1

Bchlorine: 1, hydrogen: 1, sodium hydroxide: 2

Cchlorine: 2, hydrogen: 1, sodium hydroxide: 1

Dchlorine: 2, hydrogen: 2, sodium hydroxide: 1

✓ Correct answer

B: chlorine: 1, hydrogen: 1, sodium hydroxide: 2

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Topic: Electrochemistry, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2009 Paper 1 Variant 2, question 15.

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