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
- 可逆
- 否
- 能量
- 放热
- ΔH
- -109.0 kJ/mol
相关反应
Iron(III) Chloride and Sodium Hydroxide
Calcium Chloride and Sodium Carbonate
Barium Chloride and Sodium Sulfate Precipitation
Calcium Hydroxide and Carbon Dioxide (Limewater Test)
Magnesium Hydroxide and Hydrochloric Acid (Antacid)
Lead Nitrate and Potassium Iodide (Golden Rain)
Copper(II) Sulfate and Sodium Hydroxide
Sodium Hydroxide and Iron(III) Chloride (Rust Color)
Sodium Hydroxide and Hydrochloric Acid Neutralization
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.