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Question: Answered & Verified by Expert
On addition of small amount of $\mathrm{KMnO}_4$ to conc. $\mathrm{H}_2 \mathrm{SO}_4$, a green oily compound is obtained which is highly explosive in nature. Identify the compound from the following.
Chemistryd and f Block ElementsJIPMERJIPMER 2013
Options:
  • A $\mathrm{Mn}_2 \mathrm{O}_7$
  • B $\mathrm{MnO}_2$
  • C $\mathrm{MnSO}_4$
  • D $\mathrm{Mn}_2 \mathrm{O}_3$
Solution:
2725 Upvotes Verified Answer
The correct answer is: $\mathrm{Mn}_2 \mathrm{O}_7$
$\begin{aligned} 2 \mathrm{KMnO}_4+2 \mathrm{H}_2 \mathrm{SO}_4 \text { (conc.) } & \longrightarrow \\ \mathrm{Mn}_2 \mathrm{O}_7 & +2 \mathrm{KHSO}_4+\mathrm{H}_2 \mathrm{O}\end{aligned}$

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