Na2cro4-- na2cr2o7-- cr2(so4)3-- cr(oh)3-- k[cr(oh)4(h2o)2] - вопрос №345619424227243342 от basik2017 01.02.2021 05:30

Question

Химия: Na2cro4-- na2cr2o7-- cr2(so4)3-- cr(oh)3-- k[cr(oh)4(h2o)2]

basik2017 · Answer

2Na2CrO4+H2SO4=Na2Cr2O7+Na2SO4+H2ONa2Cr2O7+3Na2S+7H2SO4=Cr2(SO4)3+3S+4Na2SO4+7H2OCr2(SO4)3+6NaOH=2Cr(OH)3+3Na2SO4Cr(OH)3+KOH+2H2O=K[Cr(OH)4(H2O)2]...

Na2cro4--> na2cr2o7--> cr2(so4)3--> cr(oh)3--> k[cr(oh)4(h2o)2]