Question

In a reaction the ferrous $(Fe^{+ +})$ iron is oxidised to ferric $(Fe^{+ + +})$ ion. The equivalent weight of the ion in the above reaction is equal to.

• A. Half of the atomic weight
• B. 1/5 of the atomic weight
• C. The atomic weight
• D. Twice the atomic weight

Answer 1

Answer: (C)

The atomic weight

Answer 2

The atomic weight;

$\text{Equivalent weight } = \ \frac{\text{Atomic weight}}{\text{ No. of }\text{e}^{–}\text{lost or gained}}$

$Fe^{2 +} \rightarrow Fe^{3 +} + e^{-}$

∴Equivalent weight = Atomic weight