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O-LevelChemistryElectrolysis5070/11 · Oct/Nov 2015 · Q191 Mark

Which occurs during the electrolysis of dilute sulfuric acid?

AHydrogen and oxygen are formed in the ratio two volumes of oxygen to one volume of hydrogen.
BHydrogen is formed at the positive electrode.
COxide ions are oxidised to oxygen.
DThe dilute sulfuric acid becomes more concentrated.

✓ Correct answer

D: The dilute sulfuric acid becomes more concentrated.

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About this question

Topic
Electrolysis, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, Oct/Nov 2015 Paper 1 Variant 1, question 19.

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