Question

The chemical nature of hydrogen preoxide is:

• A. oxidising and reducing agent in acidic medium, but not in basic medium.
• B. oxidising and reducing agent in both acidic and basic medium
• C. reducing agent in basic medium, but not in acidic medium
• D. oxidising agent in acidic medium, but not in basic medium.

Answer 1

The correct option is B oxidising and reducing agent in both acidic and basic medium

$H_2{O}_2$ act as oxidisong agent and reducing agent in acidic medium as well as basic medium.
$H_2{O}_2$ Act as oxidant:
$H_2{O}_2+2H^{\oplus }+2e^{\ominus }\to 2H_{2}O$ (In acidic medium)
$H_{2}O+2e^{\ominus }\to 2O{H}^{\ominus }$ (In basic medium)
$H_2{O}_2$ Acts as reductant:-
$H_2{O}_2\to 2H^{+}+O_2+2e^{\ominus }$ (In acidic medium)
$H_2{O}_2+2O{H}^{\ominus }\to 2H_{2}O+O_2+2e^{\ominus }$ (in basic medium)