Question

In which of the following reaction hydrogen peroxide is a reducing agent?

• A. $2FeC{l}_2$ + $2HCl$ + $H_2{O}_2$ $\to$$2FeC{l}_3$ + $2H_{2}O$
• B. $C{l}_2$ +$H_2{O}_2$ $\to$ $2HCl$ + $O_2$
• C. $HI$ +$H_2{O}_2$ $\to$ $2H_{2}O$ + $I_2$
• D. $H_{2}S{O}_3$ +$H_2{O}_2$ $\to$ $H_{2}S{O}_4$ +$H_{2}O$

Answer 1

The correct option is B

$C{l}_2$ +$H_2{O}_2$ $\to$ $2HCl$ + $O_2$

$\underset{0}{C{l}_2}$ + $H_2{O}_2$ $\to$ $\underset{-1}{2HCl}$ + $O_2$

In this reaction $H_2{O}_2$ works as reducing agent