Chemistry 9701 · AS & A Level · Electrochemistry

Electrochemistry — practice question

Household bleaches and disinfectants often contain solutions with chlorate(I) ions. When these solutions are heated, they decompose as shown: $3\text{ClO}^- \rightarrow \text{ClO}_3^- + 2\text{Cl}^-$. Which oxidation state is shown by chlorine in each of these three ions?

  • A$+1, +3, -1$
  • B$-1, +3, +1$
  • C$+1, +5, -1$
  • D$-1, +5, +1$

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