Brine when saturated first with NH3 and then with CO2 gives a mixture which when filtered gives a white residue (A) and the filtrate (B). Solid(A) when strongly heated gives a white solid (C). The solids (A) and (C) are respectively - Sri Chaitanya Infinity Learn Best Online Courses for NCERT Solutions, CBSE, ICSE, JEE, NEET, Olympiad and Class 6 to 12

Preparation of Na₂CO₃ by solvay process involves the following reactions :

2NH₃ $+$ CO₂ + H₂O $\to$ (NH₄)₂CO₃

(NH₄)₂CO₃ + CO₂ + H₂O $\to$ 2NH₄HCO₃

2NaCl + 2NH₄HCO₃ $\to$ 2NaHCO₃(A) +2NH₄Cl (B)

2NaHCO₃(A) $\overset{heat}{\to}$ Na₂CO₃(C) + CO₂ + H₂O

Brine when saturated first with NH₃ and then with CO₂ gives a mixture which when filtered gives a white residue (A) and the filtrate (B). Solid(A) when strongly heated gives a white solid (C). The solids (A) and (C) are respectively