Hydrogen peroxide is a powerful oxidising agent, both in the acidic and alkaline medium. In acidic medium: `H_(2)O_(2)+2H^(o+)+2e^(ɵ)to2H_(2)O` In alkaline medium: `H_(2)O_(2)+2e^(ɵ)to2overset(Theta)(O)H` Hydrogen peroxide acts as a reducing agent towards powerful oxidising agents. In acidic medium: `H_(2)O_(2)to2H^(o+)+O_(2)+2e^(ɵ)` In alkaline medium, however, its reducing nature is more effective. `H_(2)O_(2)to2H^(o+)+O_(2)+2e^(ɵ)` In which of the following reactions, `H_2O_2` act as a reducing agent?A. `PbO_(2)+H_(2)O_(2)rarrPbO+H_(2)O+O_(2)`B. `Na_(2)SO_(3)+H_(2)O_(2)rarrNa_(2)SO_(4)+H_(2)O`C. `2KI+H_(2)O_(2)rarr2KOH+I_(2)`D. `KNO_(2)+H_(2)O_(2)rarrKNO_(3)+H_(2)O`

Hydrogen peroxide is a powerful oxidising agent, both in the acidic an

1.	Hydrogen peroxide is a powerful oxidising agent, both in the acidic and alkaline medium. In acidic medium: `H_(2)O_(2)+2H^(o+)+2e^(ɵ)to2H_(2)O` In alkaline medium: `H_(2)O_(2)+2e^(ɵ)to2overset(Theta)(O)H` Hydrogen peroxide acts as a reducing agent towards powerful oxidising agents. In acidic medium: `H_(2)O_(2)to2H^(o+)+O_(2)+2e^(ɵ)` In alkaline medium, however, its reducing nature is more effective. `H_(2)O_(2)to2H^(o+)+O_(2)+2e^(ɵ)` In which of the following reactions, `H_2O_2` act as a reducing agent?A. `PbO_(2)+H_(2)O_(2)rarrPbO+H_(2)O+O_(2)`B. `Na_(2)SO_(3)+H_(2)O_(2)rarrNa_(2)SO_(4)+H_(2)O`C. `2KI+H_(2)O_(2)rarr2KOH+I_(2)`D. `KNO_(2)+H_(2)O_(2)rarrKNO_(3)+H_(2)O`
Answer» Correct Answer - A `overset(+4)(PbO_(2)) + H_(2)O_(2) rarr overset(2+)PbO+H_(2)O + O_(2)`

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