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Cambridge IGCSE Chemistry practice

Paper 4 structured question: Reversible reactions and equilibrium

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4

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3

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Topic

Reversible reactions and equilibrium

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Paper 4Theory (Extended)3 marks

The Contact process is used to produce sulfuric acid from sulfur dioxide and oxygen.

Description

Contact Process Conditions

The process uses a catalyst and operates at specific temperature and pressure to maximize yield.

  1. a

    Explain the role of the catalyst in the Contact process.

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 4 structured question: Reversible reactions and equilibrium

Paper 4Theory (Extended)1 marks

Description

Haber Process Conditions

The process operates at high pressure and moderate temperature to optimize ammonia production.

  1. a

    State the typical pressure used in the Haber process.

    Aim for approximately 1 distinct marking point.

    [1]