A-LevelChemistryGroup 179701/12 · Oct/Nov 2014 · Q161 Mark

Chlorine gas reacts with cold aqueous sodium hydroxide. It can also react with hot aqueous sodium hydroxide. What are the oxidation numbers of chlorine in the products of these reactions? [Table with columns: cold aqueous sodium hydroxide, hot aqueous sodium hydroxide]

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A-1, +1 -1, +5

B-1, +1 +1, +6

C-1, +2 -1, +5

D-1, +2 +1, +6

✓ Correct answer

A: -1, +1 -1, +5

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Topic: Group 17, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2014 Paper 1 Variant 2, question 16.

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