1) ZnSO3 = ZnO + SO2
2) ZnO + H2S = ZnS +H2O
3) ZnS + 2HCl = ZnCl2 +H2S
4)ZnCl2 + 2NaOH (по каплям) = 2NaCl + Zn(OH)2
5)Zn(OH)2 +2NaOH (избыток) = Na2ZnO2 + 2H2O
1) ZnSO3 = ZnO + SO2
2) ZnO + H2S = ZnS +H2O
3) ZnS + 2HCl = ZnCl2 +H2S
4)ZnCl2 + 2NaOH (по каплям) = 2NaCl + Zn(OH)2
5)Zn(OH)2 +2NaOH (избыток) = Na2ZnO2 + 2H2O