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8.3 Identification of ions by chemical and spectroscopic means

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Question 23

A manufacturer uses a flame test to check whether a liquid fertiliser contains potassium ions. Which flame colour would show that potassium ions are present?

[1]
A

A crimson red flame

B

A yellow flame

C

A lilac flame

D

A green flame

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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