NaHCO₃ + HCl = NaCl + H₂O + CO₂
Na⁺ + HCO₃⁻ + H⁺ + Cl⁻ = Na⁺ + Cl⁻ + H₂O + CO₂
HCO₃⁻ + H⁺ = H₂O + CO₂
MgO + 2HCl = MgCl₂ + H₂O
MgO + 2H⁺ + 2Cl⁻ = Mg²⁺ + 2Cl⁻ + H₂O
MgO + 2H⁺ = Mg²⁺ + H₂O
CaCO₃ + 2HCl = CaCl₂ + H₂O + CO₂
CaCO₃ + 2H⁺ + 2Cl⁻ = Ca²⁺ + 2Cl⁻ + H₂O + CO₂
CaCO₃ + 2H⁺ = Ca²⁺ + H₂O + CO₂