September 2021 0 15 Report
Срочно Подобрать коэффициенты в следующих окислительно-восстановительных реакциях методом электронно-ионного баланса:
1) SnCl2+Br2+NaOH = Na2SnO3+NaBr+NaCl+H2O
2) Al+KClO4+H2SO4 = KCl+Al2(SO4)3+H2O
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