JAMB - Chemistry (2019 - No. 74)
The reaction \(2H_2 S + SO_2 \to 3S + 2H_2 O\) is
not a redox reaction because there is no oxidant in the reaction
not a redox reaction because there is no reductant in the reaction
a redox reaction in which H\(_2\)S is the oxidant and SO\(_2\) is the reductant
a redox reaction in which SO\(_2\) is the oxidant and H\(_2\)S is the reductant