Learning objective

Identify the substances produced at the electrodes and explain the observations during the electrolysis of: (a) molten lead(II) bromide, (b) concentrated aqueous sodium chloride, and (c) dilute sulfuric acid using inert electrodes such as platinum or carbon/graphite.

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Exam focus

Cambridge IGCSE Combined ScienceElectrochemistryCore content

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Quick explanation

This point belongs to Electrolysis, especially Electrolysis outcomes.
You need to be able to identify the substances produced at the electrodes and explain the observations during the electrolysis of: (a) molten lead(II) bromide, (b) concentrated aqueous sodium chloride, and (c) dilute sulfuric acid using inert electrodes such as platinum or carbon/graphite.
The key ideas to know are Identify and Describe.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

IdentifyDescribe

Why it matters

This objective helps connect Electrolysis outcomes to exam-style questions, flashcards, and revision notes for Electrolysis.

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Paper 3Theory (Core)3 marks

Description

Consider the electrolysis of molten lead(II) bromide, concentrated aqueous sodium chloride, and dilute sulfuric acid using inert electrodes.

a
Analyse Identify the products formed at the electrodes for each substance and explain the observations made during the electrolysis process.
Your answer
Aim for approximately 3 distinct marking points.
[3]

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