Zn + 2HCl → ZnCl2 + H2
ZnCl2 + 2NaOH → Zn(OH)2 + 2NaCl
Zn(OH)2 + 2NaOH → Na2ZnO2 + 2H2O
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CuSO4 + 2NaOH → Cu(OH)2↓ + Na2SO4
Cu(OH)2 + 4(NH3•H2O) → [Cu(NH3)4](OH)2 + 4H2O
[Cu(NH3)4](OH)2 + 6HCl = 4NH4Cl + CuCl2 + 2H2O
Zn + 2HCl → ZnCl2 + H2
ZnCl2 + 2NaOH → Zn(OH)2 + 2NaCl
Zn(OH)2 + 2NaOH → Na2ZnO2 + 2H2O
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CuSO4 + 2NaOH → Cu(OH)2↓ + Na2SO4
Cu(OH)2 + 4(NH3•H2O) → [Cu(NH3)4](OH)2 + 4H2O
[Cu(NH3)4](OH)2 + 6HCl = 4NH4Cl + CuCl2 + 2H2O