Question

The final products obtained for the following reaction is :

KMnO4 (excess) + H2SO4 (concentrated and cold) $\longrightarrow$

• A. Mn2 O7
• B. MnO
• C. Mn3O4
• D. MnO3+

Answer 1

Answer: (A)

Mn2 O7

Answer 2

2KMnO4 + 3H2SO4 $\longrightarrow$ 2KHSO4 + (MnO3)2SO4 + 2H2O

(MnO3)2SO4 + H2O $\longrightarrow$ Mn2O7 + H2SO4