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Cambridge IGCSE Combined Science practice

Paper 3 structured question: Redox

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Redox

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Paper 3Theory (Core)2 marks

Redox reactions are common in various chemical processes.

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Redox Reaction Example

Consider the reaction between iron(II) ions and copper(II) ions.

  1. a

    Explain the changes in oxidation states of iron and copper in this reaction.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 3 structured question: Redox

Paper 3Theory (Core)2 marks

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Oxidation and Reduction

Identify the oxidation and reduction processes in the following reaction: 2Fe^2+ + Cu^2+ → 2Fe^3+ + Cu.

  1. a

    Identify the species that is oxidized and the species that is reduced in this reaction.

    Aim for approximately 2 distinct marking points.

    [2]