redox demonstrations with potassium permanganate. • KMnO₄ is a powerful oxidising agent in many organic and inorganic circumstances. It also has a range of oxidation states, with manganese being in a 7 oxidation state in the permanganate compound, all the way down to 2. • 3 oxidation states are involved in this demonstration. Firstly the original starting material, KMnO₄, is purple. The solution is made alkaline via the addition of sodium hydroxide. • A white solid compound, sodium thiosulphate

Reaction of Potassium Permanganate and Hydrogen Peroxide