Question

When SO₂ gas is passed through saturated solution of H₂S, the following reaction occurs:

SO₂ + 2H₂S → 2H₂O + 3S

In this reaction, which substance is oxidised and which one is reduced?

Answer 1

In the above reaction, SO₂ is reduced to S as it loses oxygen. On the other hand, H₂S, which gains oxygen, gets oxidised to H₂O.