• ZnO + H2O = Zn(OH)2

• Zn + 2H2O = Zn(OH)2↓ + H2

• Zn(OH)2 + H2SO4 = ZnSO4 + 2H2O

• Zn + Ag2O + H2O = Zn(OH)2↓ + 2Ag

• Zn(OH)2 + 2HCl = ZnCl2 + 2H2O

• Zn + HgO + H2O = Zn(OH)2↓ + Hg

• ZnCl2 + 2KOH = Zn(OH)2↓ + 2KCl

• Zn(OH)2 + 2NaOH = Na2ZnO2 + 2H2O

• Zn(NO3)2 + 2NaOH = Zn(OH)2↓ + 2NaNO3

• 2CH3COOH + Zn(OH)2 = Zn(CH3COO)2 + 2H2O