Solvay process: Difference between revisions
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The Solvay Process is a chemical process which uses [[ammonia]] to convert [[salt]] and [[calcium carbonate]] into [[sodium carbonate]] and [[calcium chloride]]. | The Solvay Process is a chemical process which uses [[ammonia]] to convert [[salt]] and [[calcium carbonate]] into [[sodium carbonate]] and [[calcium chloride]]. | ||
# Roast[[calcium carbonate]] ([[Limestone]]) to give [[calcium oxide]] and [[carbon dioxide]]: | # Roast [[calcium carbonate]] ([[Limestone]]) to give [[calcium oxide]] and [[carbon dioxide]]: | ||
#:{{#Chem:CaCO3 = CaO + CO2 //roast}} | #:{{#Chem:CaCO3 = CaO + CO2 //roast}} | ||
# Bubble [[carbon dioxide]] through a mixture of aqueous [[ammonia]] and [[salt]] in [[water]], giving [[ammonium chloride]] and [[sodium bicarbonate]] | # Bubble [[carbon dioxide]] through a mixture of aqueous [[ammonia]] and [[salt]] in [[water]], giving [[ammonium chloride]] and [[sodium bicarbonate]] | ||
Latest revision as of 23:07, 14 October 2023
The Solvay Process is a chemical process which uses ammonia to convert salt and calcium carbonate into sodium carbonate and calcium chloride.
- Roast calcium carbonate (Limestone) to give calcium oxide and carbon dioxide:
- CaCO3 → CaO + CO2 // roast
- Bubble carbon dioxide through a mixture of aqueous ammonia and salt in water, giving ammonium chloride and sodium bicarbonate
- NaCl + NH3 + H2O + CO2 → NaHCO3↓(s) + NH4Cl(aq)
- Filter off the sodium bicarbonate
- Recombine the calcium oxide with the aqueous ammonium chloride giving ammonia and calcium chloride.
- 2 NH4Cl(aq) + CaO → 2 NH3 + CaCl2 + H2O