Question

3.
Give
reactions
any two
ex amples of oxidation -reduction
and identify which
substance
reduction
and which
undergoes
one gets oxi dized.
​

Answer 1

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.

Answer 2

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.