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CAIE A-Level Chemistry AS 6.1.3 Redox Terminology Questions

Practise identifying oxidation, reduction, oxidising and reducing agents, and disproportionation using CAIE 9701 AS questions and mark schemes.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • Use redox terminology to identify oxidation, reduction, oxidising agents, reducing agents and disproportionation.

CAIE A-Level Chemistry AS 6.1.3 Redox Terminology Questions question 1

[Maximum number: 1]

Nitrogen dioxide reacts with water.

2NO2+H2O→HNO2+HNO32 \mathrm{NO}_{2}+\mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{HNO}_{2}+\mathrm{HNO}_{3}

Which statement about this reaction is correct?

A

Both products are formed because oxygen atoms gain electrons.

B

Nitrogen atoms undergo disproportionation.

C

The oxidation number of hydrogen is increased.

D

Water acts as an oxidising agent.

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