Sulfuric Acid and Calcium Carbonate
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H2SO4 + CaCO3 → CaSO4 + H2O + CO2
概要
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.
参加者
| 役割 | 物質 | 係数 | 状態 |
|---|---|---|---|
| 反応物 | Calcium Carbonate CaCO₃ | 1 | (s) |
| 反応物 | Sulfuric Acid H₂SO₄ | 1 | (aq) |
| 生成物 | Carbon Dioxide CO₂ | 1 | (g) |
| 生成物 | Water H₂O | 1 | (l) |
| 生成物 | Calcium Sulfate CaSO₄ | 1 | (s) |
日常の例
Acid rain containing sulfuric acid damages limestone buildings and marble statues through this reaction, causing surface erosion over decades.
産業上の重要性
この反応は酸性雨被害の評価、排煙脱硫（湿式石灰岩スクラバー）、リン鉱石からのリン酸製造に関連する。
特性
- タイプ
- Acid-Base
- 可逆的
- いいえ
- エネルギー
- 発熱性
- ΔH
- -26.0 kJ/mol