Question

Which of the following will not be oxidized by $O_3$?

• A. KI
• B. $FeS{O}_4$
• C. $KMn{O}_4$
• D. $K_{2}Mn{O}_4$

Answer 1

The correct option is C $KMn{O}_4$

$KMn{O}_4$ is a very strong oxidizing agent and hence $O_3$ cannot oxidise it. Moreover, Mn in $KMn{O}_4$ exists as $M{n}^{7+}$ and hence, oxidation is not possible further.