Question

When SO₂ gas is passed through saturated solution of H₂S, the following reaction occurs:
${\mathrm{SO}}_2+2{\mathrm{H}}_2\mathrm{S}\underset{}{\to }2{\mathrm{H}}_2\mathrm{O}+3\mathrm{S}$
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.