Calcium Hydroxide and Sulfuric Acid

Ca(OH)2 + H2SO4 → CaSO4 + 2H2O

Visão geral

Calcium hydroxide reacts with sulfuric acid to form calcium sulfate and water. The product calcium sulfate is a sparingly soluble salt that partially precipitates. This reaction produces gypsum (calcium sulfate dihydrate), one of the most important construction materials.

Participantes

Papel Substância Coeficiente Estado
Reagente Calcium Hydroxide Ca(OH)₂ 1 (s)
Reagente Sulfuric Acid H₂SO₄ 1 (aq)
Produto Calcium Sulfate CaSO₄ 1 (s)
Produto Water H₂O 2 (l)

Exemplo do cotidiano

Gypsum board (drywall) used in virtually every modern building is made from calcium sulfate, which can be produced by this type of reaction.

Importância industrial

O sulfato de cálcio (gesso) é utilizado em placas de gesso cartonado, reboco, retardador de cimento e como aditivo alimentar. A dessulfuração de gases de combustão utiliza cal para reagir com o SO₂, produzindo gesso como subproduto.

Propriedades

Tipo
Double Replacement
Reversível
Não
Energia
Exotérmico
ΔH
-109,0 kJ/mol

Reações relacionadas

Iron(III) Chloride and Sodium Hydroxide Ammonia and Hydrochloric Acid (White Smoke) Calcium Carbonate and Hydrochloric Acid Calcium Chloride and Sodium Carbonate Barium Chloride and Sodium Sulfate Precipitation Calcium Hydroxide and Carbon Dioxide (Limewater Test) Sodium Hydroxide and Iron(III) Chloride (Rust Color) Sodium Hydroxide and Hydrochloric Acid Neutralization Potassium Hydroxide and Sulfuric Acid Aluminum Hydroxide and Hydrochloric Acid

Frequently Asked Questions

What is the equation for Calcium Hydroxide and Sulfuric Acid?
The balanced equation is: Ca(OH)₂ + H₂SO₄ → CaSO₄ + 2H₂O.
What type of reaction is Calcium Hydroxide and Sulfuric Acid?
Calcium Hydroxide and Sulfuric Acid is a double replacement reaction.
Is Calcium Hydroxide and Sulfuric Acid exothermic or endothermic?
Calcium Hydroxide and Sulfuric Acid is exothermic (releases energy). The enthalpy change (ΔH) is -109.0 kJ/mol.