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8.3 Identification of ions by chemical and spectroscopic means

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Question 14

A geologist tests two portions of an extract from a mineral sample.

PortionTreatment before adding silver nitrate solutionObservation
ANoneWhite precipitate
BDilute nitric acid added firstWhite precipitate

Explain what can be concluded from the result for portion B and why the result for portion A alone would not establish the same conclusion.

[3]
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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