October 2021 0 5 Report
Метоодом электронного баланса подберите коэнффициенты в схеме окислительно-восстанавительной реакции, укажите окислитель и восстанавитель:
H2S+K2Cr2O7 + H2SO4 стрелка в право S + Cr(SO4)3 + K2SO4 + H2O
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