Decomposition of Calcium Carbonate (Calcination)

CaCO3 → CaO + CO2

개요

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.

참여 물질

역할 물질 계수 상태
반응물 Calcium Carbonate CaCO₃ 1 (s)
생성물 Calcium Oxide CaO 1 (s)
생성물 Carbon Dioxide CO₂ 1 (g)

일상 속 예시

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

산업적 중요성

이 반응은 시멘트 생산(연간 40억 톤 이상)의 기초입니다. 또한 단일 산업 CO₂ 배출원 중 가장 큰 규모로, 전 세계 배출량의 약 8%를 차지합니다.

성질

유형
Decomposition
가역 반응
예
에너지
흡열
ΔH
178.3 kJ/mol

관련 반응

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.