Decomposition of Calcium Carbonate (Calcination)
CaCO3 → CaO + CO2
Tổng quan
Calcium carbonate (limestone) decomposes when heated above 840 C into calcium oxide (quicklime) and carbon dioxide gas. This is one of the oldest known industrial chemical reactions, used for thousands of years in cement and mortar production. It is a key process in the cement industry.
Người tham gia
| Vai trò | Chất | Hệ số | Trạng thái |
|---|---|---|---|
| Chất phản ứng | Calcium Carbonate CaCO₃ | 1 | (s) |
| Sản phẩm | Calcium Oxide CaO | 1 | (s) |
| Sản phẩm | Carbon Dioxide CO₂ | 1 | (g) |
Ví dụ thực tế
Lime kilns that have operated for centuries use this reaction to convert limestone into quicklime for building materials.
Tầm quan trọng công nghiệp
This reaction is fundamental to cement production (over 4 billion tonnes annually). It is also the largest single industrial source of CO2 emissions, responsible for about 8% of global emissions.
Tính chất
- Loại
- Decomposition
- Thuận nghịch
- Có
- Năng lượng
- Thu nhiệt
- ΔH
- 178,3 kJ/mol
Phản ứng liên quan
Decomposition of Calcium Hypochlorite
Decomposition of Carbonic Acid
Decomposition of Nitrous Oxide (Laughing Gas)
Decomposition of Barium Peroxide
Decomposition of Sodium Bicarbonate
Decomposition of Water (Electrolysis)
Decomposition of Silver Chloride (Photodecomposition)
Thermal Decomposition of Lead(IV) Oxide
Decomposition of Hydrogen Peroxide
Decomposition of Ammonium Nitrate
Frequently Asked Questions
What is the equation for Decomposition of Calcium Carbonate (Calcination)?
The balanced equation is: CaCO₃ → CaO + CO₂.
What type of reaction is Decomposition of Calcium Carbonate (Calcination)?
Decomposition of Calcium Carbonate (Calcination) is a decomposition reaction. It is reversible under certain conditions.
Is Decomposition of Calcium Carbonate (Calcination) exothermic or endothermic?
Decomposition of Calcium Carbonate (Calcination) is endothermic (absorbs energy). The enthalpy change (ΔH) is 178.3 kJ/mol.