# What is an example of oxidation?

Oct 21, 2015

Iron rusting.

#### Explanation:

Iron will oxidize in the presence of oxygen and moisture to give iron(III) oxide.

$4 F {e}^{2 +} \left(a q\right) + {O}_{2} \left(g\right) + 4 {H}_{2} O \left(l\right) \to 2 F {e}_{2} {O}_{3} \left(s\right) + 8 {H}^{+} \left(a q\right)$

The oxidation state of $F e$ is $0$ and the oxidation state of iron in $F {e}_{2} {O}_{3}$ is $+ 3$.

Oxidation: Increase in the oxidation state.