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A-LevelChemistryElectrochemistry9701/12 · Oct/Nov 2022 · Q61 Mark

The compound potassium bismuthate(V), KBiO3, is a powerful oxidising agent. What is the significance of the (V) in potassium bismuthate(V)?

AIt is the oxidation number of the bismuth atom.
BIt is the charge of the bismuthate ion.
CIt is the oxidation number of the bismuthate ion.
DIt is the sum of the charges of the two ions present.

✓ Correct answer

A: It is the oxidation number of the bismuth atom.

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About this question

Topic
Electrochemistry, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source
A-Level Chemistry, Oct/Nov 2022 Paper 1 Variant 2, question 6.

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