Hydrogen peroxide oxidises `[Fe(CN)_(6)]^(4-)` to `[Fe(CN)_(6)]^(3-)` in acidic medium but reduces `[Fe(CN)_(6)]^(3-)` to `[Fe(CN)_(6)]^(4-)` in alkaline medium. The other products formed are, respectively

Options

A. `(H_(2)O+O_(2)` and `(H_( 2)O+OH^(-))`
B. `H_(2)O` and `(H_(2)O+O_(2))`
C. `H_(2)O` and `(H_(2)O+OH^(-))`
D. `(H_(2)O+O_(2))` and `H_(2)O`

Answer

B

Explanation

`2[Fe(CN)_(6)]^(4-) + H_(2)O_(2) + 2H^(+) to 2[Fe(CN)_(6)]^(3-) + 2H_(2)O`
`2[Fe(CN)_(6)]^(3-) + H_2O_(2) + 2OH^(-) to `
`2[Fe(CN)_(6) ]^(4-) + O_(2) + 2H_(2)O`