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8.3 Identification of ions by chemical and spectroscopic means

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Question 10
H

Three colourless solutions are labelled J, K and L. Each solution contains one of the compounds aluminium sulfate, calcium chloride and magnesium sulfate.

a.

Describe how sodium hydroxide solution can be used to identify the solution containing aluminium sulfate. Give the result of the test.

[2]
b.

Describe a test that would identify which of the two remaining solutions contains magnesium sulfate. Give the results of the test.

[3]
c.

Give the formula of the white precipitate formed in part b).

[1]
Markscheme

8.3 Identification of ions by chemical and spectroscopic means Questions

  1. GCSE
  2. /Chemistry
  3. /8.3 Identification of ions by chemical and spectroscopic means

40 exam-style questions on AQA GCSE Chemistry 8.3 Identification of ions by chemical and spectroscopic means, covering 8.3.1 Flame tests, 8.3.2 Metal hydroxides, 8.3.3 Carbonates, 8.3.4 Halides, 8.3.5 Sulfates, 8.3.6 Instrumental methods, and 8.3.7 Flame emission spectroscopy. Each one has a worked solution and a mark scheme showing where the marks go.

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