Chemistry 9701 · AS & A Level · Electrochemistry

Electrochemistry — practice question

What is the mean oxidation number of sulfur in each compound?

  • ACa(HSO$_3$)$_2$: $4$ and Na$_2$S$_2$O$_3$: $2$
  • BCa(HSO$_3$)$_2$: $4$ and Na$_2$S$_2$O$_3$: $4$
  • CCa(HSO$_3$)$_2$: $6$ and Na$_2$S$_2$O$_3$: $2$
  • DCa(HSO$_3$)$_2$: $6$ and Na$_2$S$_2$O$_3$: $4$

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