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How is potassium permanganate (KMnO_(4)) prepared from MnO_(2) ? Write the equations. |
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Answer» Solution :By fusion of `MnO_(2)` with an alkali metal hydroxide and an oxidizing agent `KNO_(3)` gives `K_(2)MnO_(4)` which on acidification gives PERMANGANATE. `2MnO_(2)+4KOH+O_(2)RARR 2K_(2)MnO_(4)+2H_(2)O` `3MnO_(2)^(-2) + 4H^(+)rarr2MnO_(4)^(-)+MnO_(2)+2H_(2)O` |
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