Which of the following samples of reducing agents is/are chemically equivalent to 25 ml of 0.2 N `KMnO_4` 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_(3)AsO_(3)` to be oxidized to `H_(3)AsO_(4)`
C. 25 mL of 0.1 M `H_(2)O_(2)` to be oxidiazed to `H^(+)` and `O_(2)`
D. 25 mL of 0.1 M `SnCl_(2)` to be oxidized to `Sn^(4+)`

Answer

A, C, D