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Learning objective

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).

Read the explanation, check the common trap, then practise with flashcards and questions.

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  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE Combined ScienceAcids, bases and saltsCore content

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Quick explanation

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)

  • This point belongs to Preparation of salts, especially Preparation of salts outcomes.
  • You need to be able to 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).
  • The key ideas to know are Describe, Explain, and Identify.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DescribeExplainIdentifyOutline

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Paper 3 structured question: Preparation of salts

Paper 3Theory (Core)3 marks

Description

Preparation of Soluble Salts

Describe the process of preparing a soluble salt from an acid using an alkali, including purification steps.

  1. a

    Describe the process of preparing a soluble salt from an acid using an alkali.

    Aim for approximately 3 distinct marking points.

    [3]
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