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Cambridge IGCSE Chemistry practice

Paper 3 structured question: Electrolysis

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Electrolysis

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Paper 3Theory (Core)1 marks

Electrolysis of sodium chloride solution.

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Electrolysis of Sodium Chloride Solution

When an electric current is passed through a sodium chloride solution, different gases are produced at the electrodes.

  1. a

    State the products formed at the anode during the electrolysis of sodium chloride solution.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: Electrolysis

Paper 3Theory (Core)1 marks

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Electrolysis of Water

During the electrolysis of water, an electric current is passed through water containing a small amount of acid to facilitate the process. Bubbles of gas are observed at both electrodes.

  1. a

    State the products formed at the cathode during the electrolysis of water.

    Aim for approximately 1 distinct marking point.

    [1]