Question

Balance the following
equation by oxidation number method K2MnO4 +H2O ➡ MnO2+KMnO4+KOH

Answer 1

Answer:

3K2MnO4 +2H2O ➡ MnO2+2KMnO4+4KOH

Answer 2

On balancing it

we get

$3 K_{2} Mn O_{4} + 2 H_{2}O$ ⇒ $Mn O_{2} + 2KMn O_{4} + 4 KOH$