Calcium Hydroxide and Sulfuric Acid

Ca(OH)2 + H2SO4 → CaSO4 + 2H2O

概述

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.

参与者

角色 物质 系数 状态
反应物 Calcium Hydroxide Ca(OH)₂ 1 (s)
反应物 Sulfuric Acid H₂SO₄ 1 (aq)
产物 Calcium Sulfate CaSO₄ 1 (s)
产物 Water H₂O 2 (l)

日常示例

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

工业重要性

硫酸钙(石膏)用于干墙板、灰泥、水泥缓凝剂以及食品添加剂。烟气脱硫使用石灰与SO2反应,副产品为石膏。

属性

类型
Double Replacement
可逆
否
能量
放热
ΔH
-109.0 kJ/mol

相关反应

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.