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JIPMER 2013
Exam
JIPMER
Year
2013
Subject
Chemistry
Chapter
d and f Block Elements

JIPMER 2013 · Chemistry · d and f Block Elements

On addition of small amount of KMnO_4 to conc. H_2 SO_4 , a green...

On addition of small amount of KMnO4\mathrm{KMnO}_4 to conc. H2SO4\mathrm{H}_2 \mathrm{SO}_4, a green oily compound is obtained which is highly explosive in nature. Identify the compound from the following.

Options

  1. AMn2O7\mathrm{Mn}_2 \mathrm{O}_7
  2. BMnO2\mathrm{MnO}_2
  3. CMnSO4\mathrm{MnSO}_4
  4. DMn2O3\mathrm{Mn}_2 \mathrm{O}_3

Correct answer

A. Mn2O7\mathrm{Mn}_2 \mathrm{O}_7

Step-by-step solution

2KMnO4+2H2SO4 (conc.) ⟶Mn2O7+2KHSO4+H2O\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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