Decomposition of Calcium Carbonate (Calcination)

CaCO3 → CaO + CO2

Übersicht

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.

Teilnehmer

Rolle Substanz Koeffizient Zustand
Reaktant Calcium Carbonate CaCO₃ 1 (s)
Produkt Calcium Oxide CaO 1 (s)
Produkt Carbon Dioxide CO₂ 1 (g)

Alltägliches Beispiel

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

Industrielle Bedeutung

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.

Eigenschaften

Typ
Decomposition
Reversibel
Ja
Energie
Endotherm
ΔH
178,3 kJ/mol

Verwandte Reaktionen

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.