Common salt : NaCl.Sodium chloride. Ammonia : NH3 .Ammonia
Lime Stone : CaCO3.Lime stone (Calcium carbonate)
H2O + NH3 + NaCl + CO2 -----------> NaHCO3 + NH4Cl
2NaHCO3 ---------- Heat------> Na2CO3+ CO2+H2O
CaCO3 ----------- Heat > CO2+CaO
CaO + H2O ---------> Ca (OH)2
Ca(OH)2+ 2NH4Cl ------------> CaCl2 +2NH3+2H2O