Chemistry
Grade-10
Easy
Question
Which of the following compound/s are recycled during the Solvay process?
- Carbon dioxide and carbon monoxide
- Ferrous hydroxide
- Ammonium chloride
- Ammonia and carbon dioxide
Hint:
Ammonia and carbon dioxide are recycled during the Solvay process.
The correct answer is: Ammonia and carbon dioxide
The Solvay process produces soda ash from brine and from limestone. The overall process is:
2 NaCl + CaCO3 → Na2CO3 + CaCl2
Now the carbon dioxide is passed through sodium chloride and ammonia.
NaCl + CO2 + NH3 + H2O → NaHCO3 + NH4Cl
The ammonia catalyst is reclaimed in next steps.
CaO + CO2
CaCO3
NH4Cl + CaO NH3 + CaCl2 + H2O
Hence, ammonia and carbon dioxide are recycled during the Solvay process.
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