NaOH + HCl → NaCl + H₂O
Na⁺ + OH⁻ + H⁺ + Cl⁻ → Na⁺ + Cl⁻ + H₂O
H⁺ + OH⁻ → H₂O
NaCl + AgNO₃ → NaNO₃ + AgCl↓
Na⁺ + Cl⁻ + Ag⁺ + NO₃⁻ → Na⁺ + NO₃⁻ + AgCl↓
Ag⁺ + Cl⁻ → AgCl
