Question

select the correct answer. the half reaction of an oxidation-reduction reaction shows that iron gains electrons. what does this electron gain mean for iron?
a. it is neutralized.
b. it is oxidized.
c. it is reduced.
d. it has dissolved.
e. it has precipitated.

Explanation:

In oxidation - reduction (redox) reactions, the process of gaining electrons is defined as reduction, while losing electrons is oxidation. When iron gains electrons, it undergoes reduction. Option A is incorrect as neutralization is related to acid - base reactions. Option B is wrong because oxidation is the loss of electrons. Options D and E are related to dissolution and precipitation processes, not electron gain/loss in redox reactions.

Answer:

C. It is reduced.