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Question
Complete the following equations : 2 MnO2 + 4 KOH + O2 →
Solution
2 MnO2 + 4 KOH + O2 → 2 K2MnO4 + 2 H2O
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Complete the following chemical equation
8MnO4- + 3S2O32- + H2O →
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(a) \[\ce{Cu^{+} -> Cu^{2+} + Cu}\]
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(c) \[\ce{2KMnO4 -> K2MnO4 + MnO2 + O2}\]
(d) \[\ce{2MnO^{-}4 + 3Mn^{2+} + 2H2O -> 5MnO2 + 4H^{+}}\]
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Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
