47) Na Cl → Cl₂ → HCl → Ag Cl

1. 2NaCl + 2H₂O → 2NaOH + Cl₂ + H₂ (electrolysis of brine)
2. Cl₂ + H₂ → 2HCl
3. HCl + AgNO₃ → AgCl + HNO₃