3[Pt(NH3)2Cl2] + 2KMnO4 + 4H2O 3[Pt(NH3)2Cl2(OH)2] + 2MnO2 + 2KOH
Trans(cis)-dichloridodiammineplatinum react with potassium permanganate and water to produce trans(cis)-dihydroxodichloridodiammineplatinum, manganese(IV) oxide and potassium hydroxide. Potassium permanganate - heated solution.