Solvay process: Difference between revisions

Revision as of 22:49, 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.

Roastlcalcium 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

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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]].
+# Roast[[lcalcium carbonate]] ([[Limestone]]) to give [[calcium oxide]] and [[carbon dioxide]]:
+#:{{#Chem:CaCO3 = CaO + CO2 //roast}}
+# Bubble [[carbon dioxide]] through a mixture of aqueous [[ammonia]] and [[salt]] in [[water]], giving [[ammonium chloride]] and [[sodium bicarbonate]]
+#:{{#Chem: NaCl + NH3 + H2O + CO2 = NaHCO3&darr;(s) + NH4Cl(aq)}}
+# Filter off the [[sodium bicarbonate]]
+$ Recombine the [[calcium oxide]] with the aqueous [[ammonium chloride]] giving [[ammonia]] and [[calcium chloride]].
+#: {{#Chem: 2NH4Cl(aq) + CaO = 2NH3 + CaCl2 +H2O}}
 [[Category:Processes]]