Question

On addition of small amount of KMnO₄ to concentrated H₂SO₄, a green oily compound is obtained which is highly explosive in nature. Identify the compound from the following. 

(i) Mn₂O₇   (ii) MnO₂    (iii) MnSO₄    (iv) Mn₂O₃

Answer 1

The correct answer is (i) Mn₂O₇

Explanation:

2KMnO₄ + 2H₂SO₄ (concentrated) → Mn₂O₇ + 2KHSO₄ + H₂O

Mn₂O₇ named Manganese(VII) oxide or Manganese heptoxide is an inorganic compound which is highly explosive in nature.

Comments

2KMnO4 + 2H2SO4 (conc) → Mn2O7 + 2KHSO4 + H2O
 Mn2O7  is a compound highly explosive in nature.