Mn → Mn(NO₃)₂ → K₂MnO₄ →MnO₂ → Mn
3Mn + 8HNO₃ = 3Mn(NO₃)₂ + 2NO + 4H₂O
Mn(NO₃)₂ + 2KOH = K₂MnO₄ +2HNO₃
3K₂MnO₄ = 2K₃MnO₄ + MnO₂ + O₂ или
2K₂MnO₄ + H₂O = KMnO₄ + MnO₂ + 3KOH
MnO₂ + H₂ = Mn + H₂O
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Verified answer
Mn → Mn(NO₃)₂ → K₂MnO₄ →MnO₂ → Mn
3Mn + 8HNO₃ = 3Mn(NO₃)₂ + 2NO + 4H₂O
Mn(NO₃)₂ + 2KOH = K₂MnO₄ +2HNO₃
3K₂MnO₄ = 2K₃MnO₄ + MnO₂ + O₂ или
2K₂MnO₄ + H₂O = KMnO₄ + MnO₂ + 3KOH
MnO₂ + H₂ = Mn + H₂O