Chemistry 0620 · IGCSE · Electrolysis

Electrolysis — practice question

This question concerns electrolysis.
(a)[2]

State the meaning of the term electrolysis.

(b(i))[4]

Complete Table 2.1.

(b(ii))[2]

Oxygen is formed at the anode during the electrolysis of aqueous copper(II) sulfate. Write the ionic half-equation for this reaction.

(c(i))[1]

Explain why the mass of the anode decreases during this electrolysis.

(c(ii))[1]

Name the product formed at the cathode.

(c(iii))[1]

State what change, if any, is observed in the appearance of the aqueous copper(II) sulfate.

Worked solution & mark scheme

This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: breakdown by the passage of electricity

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