October 2021 0 23 Report
Выберите уравнение реакции, в которой окислителем и восстановителем является один и тот же элемент 2NO2 + 2KOH = KNO3 + KNO2 + H2O
H2S + Cl2 = S + 2HCl
Zn + 2HCl = ZnCl2 + H2
2Fe2O3 + 3C = 4Fe + 3CO2
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