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Oxidation States of Manganese

Hazards

  • Sulfuric acid is corrosive and toxic.
  • Oxalic acid is caustic.

Chemicals and Solutions

  • KMnO solution
  • Oxalic acid/sulfuric acid solution

Materials

Two ungraduated cylinders

Procedure

  1. Fill both cylinder 1/4 full of KMnO solution.
  2. Fill one of the cylinders with oxalic acid/sulfuric acid solution and the other with DI water. Solution changes from Purple to Rose to Orange-brown to faint yellow to colorless over 4-5 minutes.
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