Formation of Calcium Hydroxide

CaO + H2O → Ca(OH)2

Aperçu

Calcium oxide (quicklime) reacts exothermically with water to form calcium hydroxide (slaked lime). This reaction generates considerable heat and can cause water to boil. It is one of the oldest known chemical reactions, used in construction for millennia.

Participants

Rôle Substance Coefficient État
Réactif Calcium Oxide CaO 1 (s)
Réactif Water H₂O 1 (l)
Produit Calcium Hydroxide Ca(OH)₂ 1 (s)

Exemple du quotidien

Self-heating food cans and chemical heating packs sometimes use this reaction between quicklime and water to generate heat.

Importance industrielle

Calcium hydroxide is used in water treatment, paper manufacturing, sugar refining, and as a component in mortar and plaster. Essential for pH adjustment in many industrial processes.

Propriétés

Type
Synthesis
Réversible
Non
Énergie
Exothermique
ΔH
-65,2 kJ/mol

Réactions associées

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 Formation of Sulfur Dioxide Fischer-Tropsch Synthesis (General)

Frequently Asked Questions

What is the equation for Formation of Calcium Hydroxide?
The balanced equation is: CaO + H₂O → Ca(OH)₂.
What type of reaction is Formation of Calcium Hydroxide?
Formation of Calcium Hydroxide is a synthesis reaction.
Is Formation of Calcium Hydroxide exothermic or endothermic?
Formation of Calcium Hydroxide is exothermic (releases energy). The enthalpy change (ΔH) is -65.2 kJ/mol.