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firewatch

Add a pink cobalt chloride solution to a colorless solution containing potassium sodium tartrate and hydrogen peroxide and watch as a very obvious green-colored complex forms. As the reaction ends, the solution will return to its original pink color— indicating that the cobalt chloride catalyst is not used up in the reaction.

Concepts

  • Catalysts
  • Kinetics
  • Oxidation & Reduction
 
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