Determine the change in the oxidation number of S in H_(2)S and SO_(2) in the following reaction : 2H_(2)S(g)+SO_(2)(g)to3S(s)+2H_(2)O(g).

Determine the change in the oxidation number of S in H_(2)S and SO_(2)

1.	Determine the change in the oxidation number of S in H_(2)S and SO_(2) in the following reaction : 2H_(2)S(g)+SO_(2)(g)to3S(s)+2H_(2)O(g).
Answer» Solution :`underset(O.N-2)(2H_(2)S(g))tounderset(+4)(SO_(2)(g))tounderset(O)(3S(s))+2H_(2)O(g)` O.N. of S Changes from -2 in `H_(2)S` and +4 in `SO_(2)` to 0 in elemental sulphur.