(i) Solvay or ammonia soda process to manufcture sodium carbonate.
NaCl+NH3+H2O+CO230oC−−−→NaHCO3 sodium hydrogen carbonate ↓NH4Cl
2NaHCO3 sodium hydrogen carbonate 250oC−−−→Na2CO3 sodium carbonate +H2O+CO2
The main product is sodium carbonate.
(ii) 3Ca(OH)2 slaked lime +2Cl2<35oC−−−−→Ca(OCl)2⋅CaCl2⋅Ca(OH)2⋅H2O Bleaching powder +H2O
The main product is bleaching powder.