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8.3 Identification of ions by chemical and spectroscopic means

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Question 15

A manufacturer tests rinse water from cleaned glass containers for chloride ions. A sample known to contain no halide ions is used as a control.

Sample testedDilute acid addedObservation after adding silver nitrate solution
Rinse waterHydrochloric acidWhite precipitate
ControlHydrochloric acidWhite precipitate
ControlNitric acidNo precipitate

Evaluate the conclusion that the rinse water contains chloride ions. Include how the rinse water should be tested again and the result that would support the conclusion.

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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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