Chemistry 9701 · AS & A Level · Electrochemistry

Electrochemistry — practice question

Within oxygen difluoride, $\text{OF}_2$, fluorine has an oxidation number of $-1$. $\text{OF}_2$ reacts with sulfur dioxide in accordance with the equation below. $\text{OF}_2 + \text{SO}_2 \rightarrow \text{SO}_3 + \text{F}_2$ What is oxidised and what is reduced in this reaction?

  • Afluorine oxidised; oxygen in OF$_2$ oxidised; sulfur reduced
  • Bfluorine oxidised; oxygen in OF$_2$ reduced; sulfur oxidised
  • Cfluorine reduced; oxygen in OF$_2$ oxidised; sulfur reduced
  • Dfluorine reduced; oxygen in OF$_2$ reduced; sulfur oxidised

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