Fe2O3 + 3CO ——> 2Fe + 3CO2 In the above example, Fe2O3 is reduced to Fe by losing oxygen atoms. Thus, Fe undergoes reduction. CO is oxidized to CO2 by gaining oxygen atom. Thus, C undergoes oxidation. CuO + H2→ Cu + H2O In the given reaction, CuO is reduced to Cu by losing oxygen. Thus, Cu undergoes reduction. H2 is oxidized to H2O by gaining oxygen atom. Thus, H2 undergoes oxidation.
Answer:
The reaction in which a substance loses hydrogen or gain oxygen, is called oxidation reaction.
In the given reaction C is oxidized as it gains oxygen and ZnO is reduced it loses oxygen.
Fe2O3 + 3CO ——> 2Fe + 3CO2
In the above example, Fe2O3 is reduced to Fe by losing oxygen atoms. Thus, Fe undergoes reduction. CO is oxidized to CO2 by gaining oxygen atom. Thus, C undergoes oxidation.
CuO + H2→ Cu + H2O In the given reaction, CuO is reduced to Cu by losing oxygen. Thus, Cu undergoes reduction. H2 is oxidized to H2O by gaining oxygen atom. Thus, H2 undergoes oxidation.