Learning objective

Explain how to prepare insoluble salts through precipitation (students are not required to learn general solubility rules for salts).

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Cambridge IGCSE Combined ScienceAcids, bases and saltsSupplement content

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Explain how to prepare insoluble salts through precipitation (students are not required to learn general solubility rules for salts)

This point belongs to Preparation of salts, especially Preparation of salts outcomes.
You need to be able to explain how to prepare insoluble salts through precipitation (students are not required to learn general solubility rules for salts).
The key ideas to know are Describe, Explain, and Identify.
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DescribeExplainIdentifyOutline

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Paper 4 structured question: Preparation of salts

Paper 4Theory (Extended)3 marks

Description

Precipitation Reaction

When solutions of barium chloride and sodium sulfate are mixed, a white precipitate forms.

a
Describe the process of preparing barium sulfate through precipitation.
Your answer
Aim for approximately 3 distinct marking points.
[3]

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Related learning objectives

Explain how to prepare, separate, and purify soluble salts through the reaction of an acid with: (a) an alkali using titration (b) excess metal (c) excess insoluble base (d) excess insoluble carbonate (students are not required to learn general solubility rules for salts).
Preparation of salts outcomes

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