Cr2o2= k2cro4= k2cr2= cr2(so4)3= k3{cr(oh)6} - вопрос №222422243366309012 от дашуся4 17.04.2020 08:25

Question

Химия: Cr2o2= k2cro4= k2cr2= cr2(so4)3= k3{cr(oh)6}

дашуся4 · Answer

2 Cr2O3 + 4 K2CO3 + 3 O2 = 4 K2CrO4 + 4 CO2 2 K2CrO4 + H2SO4 = K2Cr2O7 + K2SO4 + H2O K2Cr2O7 + 3 Na2SO3 + 4 H2SO4 = Cr2(SO4)3 + K2SO4 + 3 Na2SO4 + 4 H2O Cr2(SO4)3 + 12 KOH(изб) = 2 K3[Cr(OH)6] + 3 K2SO4...

Cr2o2=> k2cro4=> k2cr2=> cr2(so4)3=> k3{cr(oh)6}