Question

Corrosion of iron is essentially an electrochemical phenomenon where the cell reactions are

• A. $Fe$ is oxidised to $Fe ^{2+}$ and dissolved oxygen in water is reduced to $H _{2} O$
• B. $Fe$ is oxidised to $Fe ^{3+}$ and $O _{2}$ is reduced to $O _{2}{ }^{2-}$
• C. $Fe$ is oxidised to $Fe ^{2+}$ and $O _{2}$ is reduced to $O _{2}^{-}$
• D. $Fe$ is oxidised to $Fe ^{2+}$ and $O _{2}^{-}$is reduced to $O _{2}^{-2}$

Answer 1

Answer: (A)

Correct answer is (a) $Fe$ is oxidised to $Fe ^{2+}$ and dissolved oxygen in water is reduced to $H _{2} O$