Question

Which of the following reactions does not take place during rusting?

• A. $H_{2}CO_{3}$ $2H^{+} + CO_{3}^{2 -}$
• B. $4Fe^{2 +} + O_{2(dry)} \rightarrow Fe_{2}O_{3}$
• C. $4Fe^{2 +} + O_{2} + 4H_{2}O \rightarrow 2Fe_{2}O_{3} + 8H^{+}$
• D. $Fe_{2}O_{3} + xH_{2}O \rightarrow Fe_{2}O_{3}.xH_{2}O$

Answer 1

Answer: (B)

$4Fe^{2 +} + O_{2(dry)} \rightarrow Fe_{2}O_{3}$

Answer 2

$Fe^{2 +}$ion does not react with dry oxygen.