In the synthesis of sodium carbonate by Solvay (or ammonia soda) process the recovery of ammonia is done by treating NH4Cl with Ca(OH)2. The by-product obtained in the process is —

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In the synthesis of sodium carbonate by Solvay (or ammonia soda) process the recovery of ammonia is done by treating NH4Cl with Ca(OH)2. The by-product obtained in the process is —

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