Formation of Calcium Carbonate from Oxides

CaO + CO2 → CaCO3

Visão geral

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.

Participantes

Papel Substância Coeficiente Estado
Reagente Calcium Oxide CaO 1 (s)
Reagente Carbon Dioxide CO₂ 1 (g)
Produto Calcium Carbonate CaCO₃ 1 (s)

Exemplo do cotidiano

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

Importância industrial

Esta reação é relevante para a tecnologia de captura de carbono e a carbonatação do cimento. A calcário natural (CaCO₃) é a rocha sedimentar mais abundante, utilizada em construção, metalurgia e fabrico de cal.

Propriedades

Tipo
Synthesis
Reversível
Sim
Energia
Exotérmico
ΔH
-178,3 kJ/mol

Reações relacionadas

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.