3MnSO4 + 2KMnO4 + 8H2SO4 5Mn(SO4)2 + K2SO4 + 8H2O
Manganese(II) sulfate react with potassium permanganate and sulfuric acid to produce manganese(IV) sulphate, potassium sulfate and water. Sulfuric acid - concentrated solution. This reaction takes place at a temperature of 50-60°C.