Consider the reactions (A) H_(2)O_(2)+ 2HI to I_(2)+2H_(2)O (B) HOCl + H_(2)O to H_(3)O^(+)+Cl^(-) + O_(2) Which of the following statements is correct about H_(2)O_(2) with reference to these reactions ? Hydrogen perioxide is …......... .

Consider the reactions (A) H_(2)O_(2)+ 2HI to I_(2)+2H_(2)O (B) HOCl

1.	Consider the reactions (A) H_(2)O_(2)+ 2HI to I_(2)+2H_(2)O (B) HOCl + H_(2)O to H_(3)O^(+)+Cl^(-) + O_(2) Which of the following statements is correct about H_(2)O_(2) with reference to these reactions ? Hydrogen perioxide is …......... .
Answer» an oxidising AGENT in both (A) and (B) an oxidising agent in (A) and reducing agent in (B) a reducing agent in (A) and oxidising agent in (B) a reducing agent in both (A) and (B) Solution :The rule of thumb for oxidising-reducing hebaviour of `H_(2)O_(2)` is :` H_(2)O_(2) ` ACTS as a reducing agent if `O_(2)` is EVOLVED and `H_(2)O_(2)` acts as an oxidising agent if `O_(2)` is not evolved. Thus, in reaction (A), `H_(2)O_(2)` acts as an oxidising agent since `O_(2)` is not evolved but in reaction (B), it acts a reducing agent because `O_(2)` is evolved , i.e., option (b) is correct.