Decomposition of Calcium Carbonate (Calcination)

CaCO3 → CaO + CO2

概述

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.

参与者

角色 物质 系数 状态
反应物 Calcium Carbonate CaCO₃ 1 (s)
产物 Calcium Oxide CaO 1 (s)
产物 Carbon Dioxide CO₂ 1 (g)

日常示例

Lime kilns that have operated for centuries use this reaction to convert limestone into quicklime for building materials.

工业重要性

该反应是水泥生产的基础(年产量超过40亿吨)。它也是单一工业CO2最大的排放源,约占全球排放量的8%。

属性

类型
Decomposition
可逆
是
能量
吸热
ΔH
178.3 kJ/mol

相关反应

Decomposition of Ammonium Nitrate Decomposition of Calcium Hypochlorite Decomposition of Carbonic Acid Decomposition of Iron(II,III) Oxide (Direct Reduction) Decomposition of Nitrous Oxide (Laughing Gas) Decomposition of Barium Peroxide Decomposition of Sodium Bicarbonate Decomposition of Water (Electrolysis) Thermal Decomposition of Copper(II) Carbonate Cracking of Octane (Thermal Cracking)

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.