1.

In which of the following reactions H_2O_2 acts as a reducing agent ? (i)H_2O_2 + 2H^(+) + 2bare to 2H_2O (ii)H_2O_2 - 2bare to O_2 + 2H^+ (iii) H_2O_2 + 2bare to 2OH^- (iv)H_2O_2 + 2OH^(-) - 2bare to O_2 + 2H_2O

Answer»

(iii),(IV)
(i),(iii)
(II),(iv)
(i),(ii)

Solution :These two REACTIONS are oxidation.
(ii)`{:(H_2O_2-2bare,to, O_2+2H^(+)),(DARR,,uarr),((-1),OVERSET"Oxidation"to,(0)):}`
(iv)`{:(H_2O_2 + 2OH^(-)- 2bare , to, O_2 + 2H_2O),(darr, , darr),((-1),overset"Oxidation"to ,0):}`


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