Formation of Calcium Hydroxide

CaO + H2O → Ca(OH)2

Visão geral

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.

Participantes

Papel Substância Coeficiente Estado
Reagente Calcium Oxide CaO 1 (s)
Reagente Water H₂O 1 (l)
Produto Calcium Hydroxide Ca(OH)₂ 1 (s)

Exemplo do cotidiano

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

Importância industrial

O hidróxido de cálcio é utilizado no tratamento de água, na indústria papeleira, na refinação de açúcar, no tratamento de solos agrícolas e na produção de argamassa. É produzido em centenas de milhões de toneladas anualmente.

Propriedades

Tipo
Synthesis
Reversível
Não
Energia
Exotérmico
ΔH
-65,2 kJ/mol

Reações relacionadas

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.