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)(s)+H_(2)O_(2)(aq) rarr PbO(s)+H_(2)O(l)+O_(2)(g)`B. `Na_(2)SO_(3)(aq)+H_(2)O_(2)(aq)rarrNa_(2)SO_(4)(aq)+H_(2)O(l)`C. `2KI(aq)+H_(2)O_(2)(q)rarr 2 KOH(q)+I_(2)(s)`D. `KNO_(2)(aq)+H_(2)O_(2)(aq) rarr KNO_(3)(aq)+H_(2)O(l)`

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)(s)+H_(2)O_(2)(aq) rarr PbO(s)+H_(2)O(l)+O_(2)(g)`B. `Na_(2)SO_(3)(aq)+H_(2)O_(2)(aq)rarrNa_(2)SO_(4)(aq)+H_(2)O(l)`C. `2KI(aq)+H_(2)O_(2)(q)rarr 2 KOH(q)+I_(2)(s)`D. `KNO_(2)(aq)+H_(2)O_(2)(aq) rarr KNO_(3)(aq)+H_(2)O(l)`
Answer» Correct Answer - a In the following reaction, `H_(2)O_(2)` acts as a reducing agent. `PbO_(2)(s)+H_(2)O(aq) rarr PbO(s)+H_(2)O(l)+O_(2)(g)`

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