Question

Помогите решыть ZnS-->ZnO-->ZnBr2-->Zn(OH)2-->K2ZnO2-->ZnSO4-->ZnCl2

Answer 1

1. 2ZnS + 3O2 = 2ZnO2 + 2SO2
2. ZnO + 2HBr = ZnBr2 +H2O
3. ZnBr2 + 2NaOH = Zn(OH)2 + 2NaBr
4. Zn(OH)2 + 2KOH (расплав) = K2ZnO2 + H2
5. K2ZnO2 + H2SO4 = ZnSO4 + K2SO4 + H2O
6. ZnSO4  + 2HCL = ZnCL2 + H2SO4

Answer 2

KClO3-->O2-->baO-->ba(OH)2-->BaCl2-->Ba(NO3)2-->BaSO4

Answer 3

1. 2KClO3 = 2KCl + 3O2
2. 2Ba + O2 = 2BaO
3. BaO + 2H2O = Ba(OH)2 + H2
4. Ba(OH)2 +2 HCl = BaCL2 +2 H2O
5. BaCL2 + HNO3 = Ba(NO3)2 + 2HCL
6. Ba(NO3)2 + H2SO4 = BaSO4 + HNO3