Which one of the following reactions is not associated with the Solvay process of manufacture of sodium carbonate ?

Which one of the following reactions is not associated with the Solvay

1.	Which one of the following reactions is not associated with the Solvay process of manufacture of sodium carbonate ?
Answer» `NH_(3)+H_(2)O+CO_(2)toNH_(4)HCO_(3) ` `NaCl+NH _(4) HCO_(3)toNaHCO_(3)` `2NaHCO_(3) toNa_(2)CO_(3)+H_(2)O+ CO_(2)` `2NaOH+CO_(2)to Na_(2) CO_(2)+ H_(2) O ` ANSWER :D