Cambridge IGCSE Chemistry practice

Paper 3 structured question: Electrolysis

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Paper

Marks

Topic

Electrolysis

Exam-style question

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Paper 3Theory (Core)1 marks

Electrolysis of molten lead(II) oxide.

Description

When lead(II) oxide (PbO) is melted, it dissociates into lead ions (Pb2+) and oxide ions (O2-).

a
State the product formed at the cathode during the electrolysis of molten lead(II) oxide.
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[1]

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Paper 3Theory (Core)1 marks

Description

When sodium bromide (NaBr) is melted, it dissociates into sodium ions (Na+) and bromide ions (Br-).

a
State the product formed at the anode during the electrolysis of molten sodium bromide.
Your answer
Aim for approximately 1 distinct marking point.
[1]