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8.3 Identification of ions by chemical and spectroscopic means

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Question 10

A technician at a ceramics workshop checks a metal-salt solution. The label says the solution contains either magnesium chloride or aluminium chloride. A few drops of sodium hydroxide solution are added to a sample, and a white precipitate forms.

Describe how sodium hydroxide solution can be used to find out which compound is in the solution. Give the result you would expect for each compound.

[3]
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

93 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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