peroxide decomposition Sodium carbonate is prepared on large scale by the Solvay process. The equation for the main reaction that takes place in the carbonator is: NaCl(aq) + NH3(g) + CO2(g)+ H2O(l) → NH4Cl(aq) + NaHCO3(s)

Question

Sodium carbonate is prepared on large scale by the Solvay process. The equation for the main reaction that takes place in the carbonator is:
NaCl(aq) + NH₃(g) + CO₂(g)+ H₂O(l) → NH₄Cl(aq) + NaHCO₃(s)

1. Describe how the sodium carbonate is obtained from the products of the carbonator. 
2. One of the by-products of the Solvay process is calcium chloride. Explain how the calcium chloride is formed in this process. 

Answer 1

1. The products are filtered to obtain NaHCO₃ as a residue.
   The residue is heated to obtain NaHCO₃  OR  The products are filtered then dried
2. Calcium carbonate decompose to form CaO and CO₂
   CaO/Ca(OH)₂ reacts with water and then NH₄Cl to form CaCl₂