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8.3 Identification of ions by chemical and spectroscopic means

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Question 22

A technician tests solution R. The solution contains one halide ion and may also contain carbonate ions.

TestProcedureObservation
1Silver nitrate solution is added directly to solution R.Yellow precipitate
2Dilute nitric acid is added to fresh solution R, followed by silver nitrate solution.Cream precipitate
a.

Which halide ion is present in solution R?

[1]
b.

Explain why test 2, rather than test 1, should be used to identify the halide ion.

[2]
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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