CaCl₂ + Na₂CO₃ = CaCO₃↓ + 2NaCl
Ca²⁺ + 2Cl⁻ + 2Na⁺ + CO₃²⁻ = CaCO₃↓ + 2Na⁺ + 2Cl⁻
Ca²⁺ + + CO₃²⁻ = CaCO₃↓
Na₂SO₃ + 2HCl = SO₂↑ + H₂O + 2NaCl
2Na⁺ + SO₃²⁻ + 2H⁺ + 2Cl⁻ = SO₂↑ + H₂O + 2Na⁺ + 2Cl⁻
SO₃²⁻ + 2H⁺ = SO₂↑ + H₂O
HCl + KOH = KCl + H₂O
H⁺ + Cl⁻ +
K⁺ + OH⁻ =
K⁺ + Cl⁻ +
H₂O
H⁺ + OH⁻ =H₂O