October 2021 0 19 Report
используя метод электронного баланса  сосьтавьте уравнения реакции; 1)Cr2O3+-------- +KOH====K2CrO4+KNO2 +---------- 2)NaBrO3+-------+NaOH===NaF +NaBrO4 + 3)Cu+--------- +H2SO4======NO2 +=====+Na2SO4 +H2O 4)FeSO4+KMnO4 +.........====........Mnso4 +k2SO4+H2O
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