Action of heat on K2Cr2O7 and KMnO4
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When heated strongly, it decomposes with the evolution of oxygen.
4K₂Cr₂O₇ → 4K₂CrO₄ + 2Cr₂O₃ + 3O₂.”
Potassium permanganate will decompose into potassium manganate, manganese dioxide and oxygen gas: 2KMnO4 → K2MnO4 + MnO2 + O. When Potassium permanganate is heated it turns to Potassium manganate, manganese dioxide and oxygen gas.
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