Formation of Calcium Hydroxide

CaO + H2O → Ca(OH)2

Tổng quan

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.

Người tham gia

Vai trò Chất Hệ số Trạng thái
Chất phản ứng Calcium Oxide CaO 1 (s)
Chất phản ứng Water H₂O 1 (l)
Sản phẩm Calcium Hydroxide Ca(OH)₂ 1 (s)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

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.

Tính chất

Loại
Synthesis
Thuận nghịch
Không
Năng lượng
Tỏa nhiệt
ΔH
-65,2 kJ/mol

Phản ứng liên quan

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.