Odpowiedź:
Cr2O3+3KNO3+4KOH-->2K2CrO4+3KNO2 +2H2O
Cr 3+---> Cr6+ +3e /*1
N5+ + 1e --->N4+ / *3
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Odpowiedź:
Cr2O3+3KNO3+4KOH-->2K2CrO4+3KNO2 +2H2O
Cr 3+---> Cr6+ +3e /*1
N5+ + 1e --->N4+ / *3