Chemistry 9701 · AS & A Level · Electrochemistry

Electrochemistry — practice question

Nitric acid is recognised as being involved in the oxidation of sulfur dioxide in the atmosphere. One possible reaction is given below. $\text{SO}_2 + \text{HNO}_3 \rightarrow \text{NO}^+ + \text{HSO}_4^-$ Which row gives the correct changes in oxidation numbers for nitrogen and sulfur?

  • Anitrogen $-3$, sulfur $+3$
  • Bnitrogen $-2$, sulfur $+2$
  • Cnitrogen $-2$, sulfur $+3$
  • Dnitrogen $-1$, sulfur $+2$

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