5PuCl3 + KMnO4 + 8HCl → 5PuCl4 + MnCl2 + KCl + 4H2O
Plutonium(III) chloride react with potassium permanganate and hydrogen chloride to produce plutonium(IV) chloride, manganese(II) chloride, potassium chloride and water. Hydrogen chloride - diluted solution.