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. 25mL of 0.2M `FeSO_(4)` to be oxidized to `Fe^(3+)`
B. 50mL of 0.1M `H_(3)AsO_(3)` to be oxidized to `H_(3)AsO_(4)`
C. 25mL of 0.1 `H_(2)O_(2)` to be oxidized to `H^(+)` and `O_(2)`
D. 25mL of 0.1 M `SnCl_(2)` to be oxidized to `Sn^(4+)`

Answer

a,c,d