Calcium Hydroxide and Sulfuric Acid

Ca(OH)2 + H2SO4 → CaSO4 + 2H2O

Tổng quan

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.

Người tham gia

Vai trò Chất Hệ số Trạng thái
Chất phản ứng Calcium Hydroxide Ca(OH)₂ 1 (s)
Chất phản ứng Sulfuric Acid H₂SO₄ 1 (aq)
Sản phẩm Calcium Sulfate CaSO₄ 1 (s)
Sản phẩm Water H₂O 2 (l)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

Calcium sulfate (gypsum) is used in drywall, plaster, cement retarder, and as a food additive. Flue gas desulfurization uses lime to react with SO2, producing gypsum as a byproduct.

Tính chất

Loại
Double Replacement
Thuận nghịch
Không
Năng lượng
Tỏa nhiệt
ΔH
-109,0 kJ/mol

Phản ứng liên quan

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.