Question

Which of the following can act as both reducing and oxidizing agent?

• A. $S{O}_3$
• B. $KMn{O}_4$
• C. $H_2{O}_2$
• D. $H_{2}S$

Answer 1

The correct option is C $H_2{O}_2$

$H_2^{-1}{O}_2⟶H_2^{-2}O+O_2^0$
$H_2{O}_2$ can be reduced to $H_{2}O$ as well as it can be oxidized to $O_2$. Hence, it can act as an oxidizing agent by itself getting reduced to $H_{2}O$ as well as it can act as a reducing agent by getting oxidized to $O_2$. Therefore, it can act as oxidizing as well as reducing agent.