Electrolysis and redox

1 mark · Normal

In the electrolysis of molten zinc bromide, what does it mean to 'discharge' a zinc ion (Zn^{2+}) at the cathode?

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Correct option: Zinc ions gain electrons to form zinc atoms.

Common mistakes: Choosing 'lose electrons' for cations at cathode.

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Marking points

A1 · 1 mark · Identifies correct process: zinc ions gain electrons to form zinc atoms.

Worked solution

Zinc ions gain electrons to form zinc atoms.