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 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
Formation of Sulfur Dioxide
Formation of Hydrogen Sulfide
Formation of Carbon Monoxide
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.