Chemistry 9701 · AS & A Level · Electrochemistry

Electrochemistry — practice question

Which row shows mixtures that both lead to the oxidation of a halide ion?

  • Amixture 1: $\text{AgNO}_3\text{(aq)}$ and $\text{NaCl(aq)}$; mixture 2: concentrated $\text{H}_2\text{SO}_4\text{(aq)}$ and $\text{HI(aq)}$
  • Bmixture 1: $\text{Br}_2\text{(aq)}$ and $\text{NaCl(aq)}$; mixture 2: concentrated $\text{H}_2\text{SO}_4\text{(aq)}$ and $\text{HCl(aq)}$
  • Cmixture 1: $\text{Cl}_2\text{(aq)}$ and $\text{NaBr(aq)}$; mixture 2: $\text{CH}_3\text{CHBrCH}_3\text{(l)} + \text{NaOH (ethanolic)}$
  • Dmixture 1: $\text{Br}_2\text{(aq)}$ and $\text{NaI(aq)}$; mixture 2: concentrated $\text{H}_2\text{SO}_4\text{(aq)}$ and $\text{NaBr(s)}$

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