Which of the following samples of reducing agents is /are chemically equivalent to 25mL of 0.2 N `KMnO_(4)` to be reduced to `Mn^(2+)` and water?

Options

A. 25 ml of 0.2 M `FeSO_4` to be oxidized to `Fe^(3+)`
B. 50 ml of 0.1 M `H_3AsO_3` to be oxidized to `H_3AsO_4`
C. 25 ml of 0.1 M `H_2O_2` to be oxidized to `H^+ and O_2`
D. 25 ml of 0.1 M `SnCl_2` to be oxidized to `Sn^(4+)`

Answer

A,D

Explanation

meq. Of `KMnO_4=25xx0.2=5`
meq. Of `FeSO_4`=meq. Of `SnCl_2=5`
hence (A) and (D) are correct