Na₂SO₄ + BaCl₂ = BaSO₄↓ + 2NaCl
2Na⁺ + SO₄²⁻ + Ba²⁺ + 2Cl⁻ = BaSO₄↓ + 2Na⁺ + 2Cl⁻
SO₄²⁻ + Ba²⁺ = BaSO₄↓
CaCO₃ + 2HCl = CaCl₂ + CO₂ + H₂O
CaCO₃ + 2H⁺ + 2Cl⁻ = Ca²⁺ + 2Cl⁻ + CO₂ + H₂O
CaCO₃ + 2H⁺ = Ca²⁺ + CO₂ + H₂O
H⁺ + OH⁻ = H₂O
H⁺ + Cl⁻ + K⁺ + OH⁻ = K⁺ + Cl⁻ + H₂O
HCl + KOH = KCl + H₂O