In which of the following reactions, `H_(2)O_(2)` acts as a reducing agent-
(I) `H_(2)O_(2)+2H^(+)+2eto2H_(2)O`
(II) `H_(2)O_(2)-2etoO_(2)+2H^(+)`
(III) `H_(2)O_(2)+2eto2OH^(-)`
(IV) `H_(2)O_(2)+2OH^(-)-2etoO_(2)+2H_(2)O`

Options

A. (II).(IV)
B. (I),(II)
C. (III),(IV)
D. (I),(III)

Answer

A

Explanation

In the reaction ,`H_(2)O_(2)toO_(2)+2H^(+)+2e`electrons are lost by `H_(2)O_(2)` and hence `H_(2)O_(2)` acts as a reduction
In the reaction ,`H_(2)O_(2)+2OH^(-)toO_(2)+2H^(+)+2e`electron are lost by `H_(2)O_(2)`and hence`H_(2)O_(2)` acts as a reductant .