Zn(NO₃)₂ + Mg(OH)₂ = Zn(OH)₂↓ + Mg(NO₃)₂;
Zn⁺² + 2NO₃⁻ + Mg(OH)₂ = Zn(OH)₂↓ + Mg⁺² + 2NO₃⁻;
Zn⁺² + Mg(OH)₂ = Zn(OH)₂↓ + Mg⁺².
ZnCl₂ + 2KOH = 2KCl + Zn(OH)₂↓;
Zn⁺² + 2Cl⁻ + 2K⁺ + 2OH⁻ = 2K⁺ + 2Cl⁻ + Zn(OH)₂↓;
Zn⁺² + 2OH⁻ = Zn(OH)₂↓.
ZnSO₄ + Ba(OH)₂ = BaSO₄↓ + Zn(OH)₂↓;
Zn⁺² + SO₄²⁻ + Ba⁺² + 2OH⁻ = BaSO₄↓ + Zn(OH)₂↓.