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8.3 Identification of ions by chemical and spectroscopic means

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Question 6
F

A student uses chemical tests to identify the ions in an unknown ionic compound.

a.

Dilute hydrochloric acid is an irritant. Give one way the student can reduce the risk of harm when using it.

[1]
b.

The student uses the same test tube for two tests without washing it out. Explain why this may give a wrong result.

[2]
c.

The student adds one drop of sodium hydroxide solution to a solution and sees a white precipitate. Explain why the student should add more sodium hydroxide solution.

[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

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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