Which of the following does not participate in the Solvay's process for the manufacture of Na_(2)CO_(3)?

Which of the following does not participate in the Solvay's process fo

1.	Which of the following does not participate in the Solvay's process for the manufacture of Na_(2)CO_(3)?
Answer» `NH_(3)` `NACL` SOLUTION `CO_(2)` `H_(2)SO_(4)` ANSWER :D