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8.3 Identification of ions by chemical and spectroscopic means

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Question 19
H

Which ionic equation shows the formation of the brown precipitate produced when sodium hydroxide solution is added to iron(III) chloride solution?

[1]
A

Fe2++2OH−→Fe(OH)2\text{Fe}^{2+} + 2\text{OH}^- \rightarrow \text{Fe(OH)}_2Fe2++2OH−→Fe(OH)2​

B

Fe3++3OH−→Fe(OH)3\text{Fe}^{3+} + 3\text{OH}^- \rightarrow \text{Fe(OH)}_3Fe3++3OH−→Fe(OH)3​

C

Fe3++2OH−→Fe(OH)2\text{Fe}^{3+} + 2\text{OH}^- \rightarrow \text{Fe(OH)}_2Fe3++2OH−→Fe(OH)2​

D

Fe2++3OH−→Fe(OH)3\text{Fe}^{2+} + 3\text{OH}^- \rightarrow \text{Fe(OH)}_3Fe2++3OH−→Fe(OH)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

40 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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