12.1.10

Required Practical: Separating Mixtures

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Required Practical - Separating Mixtures

The aim of this practical is to produce a pure, dry sample of a soluble salt from an insoluble oxide or carbonate.

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Preparation

  1. ­­Use a Bunsen burner to gently warm the acid.
  2. Add the insoluble solid (with stirring) until the reaction no longer happens.
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Filtration

  1. Filter the solution to remove the excess insoluble solid.
    • This will leave a solution of the salt dissolved in water.
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Crystallisation

  1. Heat the solution in an evaporating basin above a beaker of water.
    • The 'water bath' ensures gentle heating.
  2. Let the solution cool and allow more water to evaporate.
    • As water evaporates, the solution will become more concentrated and the salt will begin to crystallise.

Jump to other topics

1States of Matter

2Elements, Compounds & Mixtures

3Atomic Structure

4The Periodic Table

5Chemical Formulae, Equations & Calculations

6Bonding

7Electrolysis

8Groups of the Periodic Table

9The Atmosphere

10Reactivity Series

11Metal Extraction

12Acids & Alkalis

13Chemical Tests

14Physical Chemistry

15Organic Chemistry

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