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Hydrogen peroxide oxidises ["Fe"("CN")(...

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-

A

`H_(2)`O and `(H_(2) O + O_(2))`

B

`H_(2)O " "and " "(H_(2)O + OH^(-))`

C

`(H_(2)O + O_(2)) and H_(2) O`

D

`(H_(2)O + O_(2)) and (H_(2)O + OH^(-))`

Text Solution

Verified by Experts

Acidi medium:
` 2[Fe(CN)_(6)]^(4-) + H_(2)O_(2) + 2H^(+)rarr 2[Fe(CN)_(6)]^(3-) + 2H_(2)O`
Alkaline medium:
`2[Fe(CN)_(6)]^(3-) + 2OH^(-) +H_(2)O_(2) rarr [Fe(CN)_(6)]^(4-) + 2H_(2)O + O_(2)`
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