Question

Justify that the following reactions are redox reactions:
(a) CuO(s) + H2(g) ?

Answer 1

CuO + H2 ------> Cu + H2O

here CuO is reduced to Cu which indicates that it is reduction.

here H2 is oxidized to H2O which indicates it is an oxidation reaction.

since it contains both reduction and oxidation in it it is called as redox reaction.