Formation of Calcium Carbonate from Oxides

CaO + CO2 → CaCO3

概要

Calcium oxide reacts with carbon dioxide to form calcium carbonate. This is the reverse of the lime-burning process and occurs naturally in geological carbon sequestration. Limewater (calcium hydroxide solution) turns milky when CO2 is bubbled through due to this reaction.

参加者

役割 物質 係数 状態
反応物 Calcium Oxide CaO 1 (s)
反応物 Carbon Dioxide CO₂ 1 (g)
生成物 Calcium Carbonate CaCO₃ 1 (s)

日常の例

The classic limewater test for carbon dioxide relies on this reaction, as the milky precipitate is calcium carbonate.

産業上の重要性

この反応は炭素回収技術とセメントの炭酸化養生に関連する。製紙・プラスチック・医薬品用炭酸カルシウムの製造や石灰石洞窟の鍾乳石形成にも関係する。

特性

タイプ
Synthesis
可逆的
はい
エネルギー
発熱性
ΔH
-178.3 kJ/mol

関連する反応

Formation of Calcium Hydroxide Formation of Carbon Monoxide Formation of Nitrogen Dioxide Formation of Potassium Chloride Formation of Sodium Bicarbonate Formation of Sodium Peroxide Formation of Silicon Dioxide Formation of Tungsten Carbide Formation of Copper(II) Sulfide Fischer-Tropsch Synthesis (General)

Frequently Asked Questions

What is the equation for Formation of Calcium Carbonate from Oxides?
The balanced equation is: CaO + CO₂ → CaCO₃.
What type of reaction is Formation of Calcium Carbonate from Oxides?
Formation of Calcium Carbonate from Oxides is a synthesis reaction. It is reversible under certain conditions.
Is Formation of Calcium Carbonate from Oxides exothermic or endothermic?
Formation of Calcium Carbonate from Oxides is exothermic (releases energy). The enthalpy change (ΔH) is -178.3 kJ/mol.