Hydrochloric Acid and Sodium Carbonate
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2HCl + Na2CO3 → 2NaCl + H2O + CO2
概要
Hydrochloric acid reacts with sodium carbonate (washing soda) to produce sodium chloride, water, and carbon dioxide gas. The carbonate ion is a Brønsted base that accepts two protons. The reaction proceeds in two steps: first forming bicarbonate, then decomposing carbonic acid to CO₂ and water.
参加者
| 役割 | 物質 | 係数 | 状態 |
|---|---|---|---|
| 反応物 | Sodium Carbonate Na₂CO₃ | 1 | (s) |
| 反応物 | Hydrochloric Acid HCl | 2 | (aq) |
| 生成物 | Carbon Dioxide CO₂ | 1 | (g) |
| 生成物 | Water H₂O | 1 | (l) |
| 生成物 | Sodium Chloride NaCl | 2 | (aq) |
日常の例
The fizzing that occurs when washing soda contacts acidic cleaning solutions is due to CO₂ evolution from this reaction.
産業上の重要性
この反応は工業廃液中の酸の中和、ソルベー法による炭酸ナトリウム製造、ガラス・石鹸・紙工業で広く利用される。
特性
- タイプ
- Acid-Base
- 可逆的
- いいえ
- エネルギー
- 発熱性
- ΔH
- -24.3 kJ/mol