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 this process is:
CaCl2
NaCl
NaOH
NaHCO3
A
CaCl2
B
NaCl
C
NaOH
D
NaHCO3
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Solution
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2NH4Cl+Ca(OH)2→2NH3+H2O+CaCl2
CaCl2 is obtained as by-product in this process.
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