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8.3 Identification of ions by chemical and spectroscopic means

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Question 11

A sample known to be sodium carbonate is analysed using a flame test. Dilute hydrochloric acid is added to a second portion of the sample and any gas produced is passed through limewater.

Which pair of observations would be made?

[1]
A

A lilac flame; the limewater does not turn cloudy.

B

A yellow flame; the limewater turns cloudy.

C

A yellow flame; the limewater does not turn cloudy.

D

A lilac flame; the limewater turns cloudy.

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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