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 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.