July 2022 1 22 Report
90 баллов. расставьте коэффициенты в ОВР, используя способ электронного баланса или электронно-ионного, расписать подробно.
1) K2Cr2O7 + KBr + H2SO4 = K2SO4 + Br2 + Cr2(SO4)3 + H2O;
2) KClO3 + K2S + H2SO4 = S + KCl + K2SO4 + H2O.
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