Question

On addition of small amount of $KMn{O}_4$ to concentrated $H_{2}S{O}_4,$ a green oily compound is obtained, which is highly explosive in nature. Identify the compound from the following.

• A. $Mn{O}_2$
• B. $MnS{O}_4$
• C. $M{n}_2{O}_3$
• D. $M{n}_2{O}_7$

Answer 1

The correct option is D $M{n}_2{O}_7$

On adding a small amount of $KMn{O}_4$ to concentrated $H_{2}S{O}_4,$ the following reaction takes place:

$2KMn{O}_4+2H_{2}S{O}_4\to M{n}_2{O}_7+2KHS{O}_4+H_{2}O$

In this reaction, $M{n}_2{O}_7$ is obtained as one of the products, which is a green oily compound that is highly explosive in nature.

So, option $\left(A\right)$ is the correct answer.