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Atoms and reactions

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Question 47

In the ionic compound [VO2]+[FeCl4]−[\text{VO}_2]^+ [\text{FeCl}_4]^-[VO2​]+[FeCl4​]−, the oxidation number of oxygen is -2 and that of chlorine is -1.

What are the oxidation numbers of vanadium (V\text{V}V) and iron (Fe\text{Fe}Fe) in this compound?

A

V=+4\text{V} = +4V=+4 and Fe=+2\text{Fe} = +2Fe=+2

B

V=+5\text{V} = +5V=+5 and Fe=+3\text{Fe} = +3Fe=+3

C

V=+3\text{V} = +3V=+3 and Fe=+3\text{Fe} = +3Fe=+3

D

V=+5\text{V} = +5V=+5 and Fe=+5\text{Fe} = +5Fe=+5

Markscheme

Atoms and reactions Questions

  1. A Level
  2. /Chemistry
  3. /Atoms and reactions

199 exam-style questions on OCR A A Level Chemistry Atoms and reactions, covering Atomic structure and isotopes, Compounds, formulae and equations, Amount of substance, Acids, and Redox. Each one has a worked solution and a mark scheme showing where the marks go.

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