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In this demonstration, a drop of glycerin is added to a pile of solid potassium permanganate causing purple flames and white smoke to be given off. The effect of surface area on reaction rate is then studied by comparing the results using finely ground potassium permanganate versus larger crystals of potassium permanganate.


  • Oxidation & Reduction
  • Combustion
  • Exothermic Reactions
  • Reaction Rates