Sulfuric Acid and Calcium Carbonate
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H2SO4 + CaCO3 → CaSO4 + H2O + CO2
概述
Sulfuric acid reacts with calcium carbonate to form calcium sulfate, water, and carbon dioxide. Unlike HCl, this reaction can be self-limiting because the insoluble calcium sulfate coats the limestone surface, slowing further reaction. This is why HCl is preferred over H₂SO₄ for dissolving limestone.
参与者
| 角色 | 物质 | 系数 | 状态 |
|---|---|---|---|
| 反应物 | Calcium Carbonate CaCO₃ | 1 | (s) |
| 反应物 | Sulfuric Acid H₂SO₄ | 1 | (aq) |
| 产物 | Carbon Dioxide CO₂ | 1 | (g) |
| 产物 | Water H₂O | 1 | (l) |
| 产物 | Calcium Sulfate CaSO₄ | 1 | (s) |
日常示例
Acid rain containing sulfuric acid damages limestone buildings and marble statues through this reaction, causing surface erosion over decades.
工业重要性
该反应对酸雨危害评估、文物古迹保护和工业脱硫工艺（石灰石-石膏湿法脱硫）研究具有重要意义。
属性
- 类型
- Acid-Base
- 可逆
- 否
- 能量
- 放热
- ΔH
- -26.0 kJ/mol