Formation of Calcium Carbonate from Oxides

CaO + CO2 → CaCO3

Übersicht

Calcium oxide reacts with carbon dioxide to form calcium carbonate. This is the reverse of the lime-burning process and occurs naturally in geological carbon sequestration. Limewater (calcium hydroxide solution) turns milky when CO2 is bubbled through due to this reaction.

Teilnehmer

Rolle Substanz Koeffizient Zustand
Reaktant Calcium Oxide CaO 1 (s)
Reaktant Carbon Dioxide CO₂ 1 (g)
Produkt Calcium Carbonate CaCO₃ 1 (s)

Alltägliches Beispiel

The classic limewater test for carbon dioxide relies on this reaction, as the milky precipitate is calcium carbonate.

Industrielle Bedeutung

This reaction is relevant to carbon capture technology and cement carbonation curing. It also occurs in geological weathering processes that regulate atmospheric CO2.

Eigenschaften

Typ
Synthesis
Reversibel
Ja
Energie
Exotherm
ΔH
-178,3 kJ/mol

Verwandte Reaktionen

Formation of Calcium Hydroxide Formation of Carbon Monoxide Formation of Nitrogen Dioxide Formation of Potassium Chloride Formation of Sodium Bicarbonate Formation of Sodium Peroxide Formation of Silicon Dioxide Formation of Tungsten Carbide Formation of Copper(II) Sulfide Fischer-Tropsch Synthesis (General)

Frequently Asked Questions

What is the equation for Formation of Calcium Carbonate from Oxides?
The balanced equation is: CaO + CO₂ → CaCO₃.
What type of reaction is Formation of Calcium Carbonate from Oxides?
Formation of Calcium Carbonate from Oxides is a synthesis reaction. It is reversible under certain conditions.
Is Formation of Calcium Carbonate from Oxides exothermic or endothermic?
Formation of Calcium Carbonate from Oxides is exothermic (releases energy). The enthalpy change (ΔH) is -178.3 kJ/mol.