Decomposition of Calcium Carbonate (Calcination)
CaCO3 → CaO + CO2
Обзор
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.
Участники
| Роль | Вещество | Коэффициент | Состояние |
|---|---|---|---|
| Реагент | Calcium Carbonate CaCO₃ | 1 | (s) |
| Продукт | Calcium Oxide CaO | 1 | (s) |
| Продукт | Carbon Dioxide CO₂ | 1 | (g) |
Пример из жизни
Lime kilns that have operated for centuries use this reaction to convert limestone into quicklime for building materials.
Промышленное значение
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.
Свойства
- Тип
- Decomposition
- Обратимая
- Да
- Энергия
- Эндотермическая
- ΔH
- 178,3 kJ/mol
Связанные реакции
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.