Which of the following reactions is not associated with the Solvay process of manufacture of sodium carbonate?
(NH4)2CO3+CO2+H2O → 2NH4HCO3
2NH3+H2O +CO2 → (NH4)2CO3
NaCl + NH4HCO3 → NaHCO3 + NH4Cl
2NaOH + CO2 → Na2CO3 + H2O
2NaHCO3→∆Na2CO3+H2O+CO2 ;
This reaction occurs in Solvay process ;