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8.3 Identification of ions by chemical and spectroscopic means

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Question 27

A student uses the same nichrome wire to test a reference solution containing sodium ions and an unknown solution, Q.

The student records the observations.

StageObservation in the flame
Test the reference solutionYellow flame
Cleaning attempt 1: dip the wire in dilute hydrochloric acid and heat itYellow flame
Cleaning attempt 2: repeat the cleaning procedureNo flame colour
Test solution Q after cleaning attempt 2Green flame
a.

Explain why the student should not test solution Q immediately after cleaning attempt 1.

[2]
b.

Give the metal ion in solution Q.

[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

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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