KMnO4 acts as an oxidising agent in acidic medium. When acidic KMnO4 reacts with KI, then I- gets converted to

IO3- IO- I2 IO4-

I2

KMnO4 acts as an oxidising agent in acidic medium. When acidic KMnO4 reacts with KI, then I- gets converted to I2. In acid solutions: Iodine is liberated from potassium iodide: 10I– + 2MnO4– + 16H+ → 2Mn2+ + 8H2O + 5I2