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Cambridge IGCSE Chemistry practice

Paper 4 structured question: Electrolysis

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2

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Electrolysis

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Paper 4Theory (Extended)2 marks

Electrolysis of copper(II) sulfate solution with copper electrodes.

Description

Electrolysis with Copper Electrodes

During the electrolysis of copper(II) sulfate using copper electrodes, observations are made at both electrodes.

  1. a

    Describe the observations made at the anode during this process.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 4 structured question: Electrolysis

Paper 4Theory (Extended)1 marks

Description

Electrolysis Setup

In a laboratory, a beaker contains aqueous copper(II) sulfate. Two electrodes are submerged in the solution: one is made of graphite and the other of copper.

  1. a

    State the product formed at the cathode during the electrolysis with graphite electrodes.

    Aim for approximately 1 distinct marking point.

    [1]