Question

Решите пожалуйста цепочки:Na2O->NaOH->NaCl->MgCl2
Ba->Bao->Ba(Oh)2->BaSo4
Ca->Cao->CaSo4

Answer 1

Na:

1) Na2O + H2O = NaOH
2) NaOH + HCl = NaCl + H2O
3) NaCl + Mg(OH)2 = MgCl2 + NaOH

Ba:

1) Ba + O2 = BaO
2) BaO + H2O = Ba(OH)2
3) Ba(OH)2 + H2SO4 = BaSO4 + H2O

Ca:

1) Ca + O2 = CaO
2) CaO + H2SO4 = CaSO4 + H2O