observation when kmno4 crystals are heated
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Thermal decomposition solid potassium permanganate decomposes when heated: 2 KMnO4 → K2MnO4 + MnO2(s) + O. Here, the oxidation state of manganese changes as the potassium permanganate (oxidation state +7) decomposes to potassium manganate (oxidation state +6) and manganese dioxide (oxidation state +4).
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2 KMnO4 → K2MnO4 + MnO2(s) + O2.
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