Question

Question 6

Consider the reactions

(i) $H_2{O}_2+2HI\to I_2+2H_{2}O$
(ii) $HOCl+H_2{O}_2\to H_3{O}^{+}C{l}^{-}+O_2$

Which of the following statements is correct about $H_2{O}_2$ with reference to these reactions? Hydrogen peroxide is ........

(a) an oxidising agent in both (i) and (ii)

(b) an oxidising agent in (i) and reducing agent in (ii)

(c) a reducing agent in (i) and oxidising agent in (ii)

(d) a reducing agent in both (i) and (ii)

Answer 1

(b)

Thus, here $H_2{O}_2$ oxidises HI into $I_2$ hence it behaves as oxidising agent.

Here, $H_2{O}_2$ reduces HOCl to $C{l}^{-1}$ , thus , it acts as reducing agent.