Ca(OH)₂ + 2HNO₃ = Ca(NO₃)₂ + 2H₂O
Ca ²⁺ + 2OH⁻ + 2H⁺ + 2NO₃⁻ = Ca²⁺ + 2NO₃⁻ + 2H₂O
2OH⁻ + 2H⁺ = 2H₂O
AlCl₃ + 3KOH = Al(OH)₃↓ + 3KCl
Al³⁺ + 3Cl⁻ + 3K⁺ + 3OH⁻ = Al(OH)₃↓ + 3K⁺ + 3Cl⁻
Al³⁺ + 3OH⁻ = Al(OH)₃↓
K₂CO₃ + 2HCl = 2KCl + H₂O + CO₂↑
2K⁺ + CO₃²⁻ + 2H⁺ + 2Cl⁻ = 2K⁺ + 2Cl⁻ + H₂O + CO₂↑
CO₃²⁻ + 2H⁺ = H₂O + CO₂↑
3MgSO₄ + 2K₃PO₄ = Mg₃(PO₄)₂↓ + 3K₂SO₄
3Mg²⁺ + 3SO₄²⁻ + 6K⁺ + 2PO₄³⁻ = Mg₃(PO₄)₂↓ + 6K⁺ + 3SO₄²⁻
3Mg²⁺ + 2PO₄³⁻ = Mg₃(PO₄)₂↓