Question

Following reaction describe the rusting of iron,
$4Fe+3O_2\to 4F{e}^{3+}+6O^{2-}$
Which one of the following statement is incorrect?

• A. This is an example of a redox reaction
• B. Metallic iron is a reducing agent
• C. $O_2$ is an oxidising agent
• D. Metallic iron is reduced to $F{e}^{3+}$

Answer 1

The correct option is D Metallic iron is reduced to $F{e}^{3+}$

The given reaction is a redox reaction. Here metallic iron is oxidised from free state to +3 oxidation state and $O_2$ is reduced to -2 oxidation state. Thus metallic iron act as reducing agent and $O_2$ act as oxidising agent.
Therefore, the incorrect statement is (d).