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Transition metals (A-level only)

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Question 11

Which reaction does not involve a change in the oxidation state of the transition metal?

A
MnO4−+5Fe2++8H+→Mn2++5Fe3++4H2O \text{MnO}_4^- + 5\text{Fe}^{2+} + 8\text{H}^+ \rightarrow \text{Mn}^{2+} + 5\text{Fe}^{3+} + 4\text{H}_2\text{O} MnO4−​+5Fe2++8H+→Mn2++5Fe3++4H2​O
B
2VO2++Zn+4H+→2VO2++Zn2++2H2O 2\text{VO}_2^+ + \text{Zn} + 4\text{H}^+ \rightarrow 2\text{VO}^{2+} + \text{Zn}^{2+} + 2\text{H}_2\text{O} 2VO2+​+Zn+4H+→2VO2++Zn2++2H2​O
C
[Co(H2O)6]2++4Cl−→[CoCl4]2−+6H2O [\text{Co}(\text{H}_2\text{O})_6]^{2+} + 4\text{Cl}^- \rightarrow [\text{CoCl}_4]^{2-} + 6\text{H}_2\text{O} [Co(H2​O)6​]2++4Cl−→[CoCl4​]2−+6H2​O
D
2Fe3++2I−→2Fe2++I2 2\text{Fe}^{3+} + 2\text{I}^- \rightarrow 2\text{Fe}^{2+} + \text{I}_2 2Fe3++2I−→2Fe2++I2​
Markscheme

Transition metals (A-level only) Questions

  1. A Level
  2. /Chemistry
  3. /Transition metals (A-level only)

63 exam-style questions on AQA A Level Chemistry Transition metals (A-level only), covering General properties of transition metals (A-level only), Substitution reactions (A-level only), Shapes of complex ions (A-level only), Formation of coloured ions (A-level only), Variable oxidation states (A-level only), and Catalysts (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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