21 Mol of `FeSO_(2)` (atomic weight of Fe is 55.84 g `mol^(-1))` is oxidized to `Fe_(2)(SO_(4))^(3)` calculate the equivalent weight of ferrous ion

Options

A. 55.84
B. 27.92
C. 18.61
D. 111.68

Answer

a

Explanation

Since oxidation of `Fe^(2+)rarrFe^(3+)` is a one electron change therefore equivalent wt of `Fe^(2+)` = atomic wt of `Fe^(2+)` =55.84