August 2021 0 10 Report
Подбирите коэффициенты в схемах следующих ОВР методом электронного баланса: 1.HCl+KMnO4=MnCl2+Cl2+KCl+H2O 2.KBr+KMnO4+H2SO4=Br2+MnSO4+K2SO4+H2O  
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