Calcium Carbonate and Hydrochloric Acid (Antacid)
CaCO3 + 2HCl → CaCl2 + H2O + CO2
概述
Calcium carbonate, found in Tums antacid tablets, neutralizes hydrochloric acid in the stomach to form calcium chloride, water, and carbon dioxide gas. The carbonate ion acts as a base, accepting protons from HCl. The CO₂ evolved can cause belching.
参与者
| 角色 | 物质 | 系数 | 状态 |
|---|---|---|---|
| 反应物 | Calcium Carbonate CaCO₃ | 1 | (s) |
| 反应物 | Hydrochloric Acid HCl | 2 | (aq) |
| 产物 | Water H₂O | 1 | (l) |
| 产物 | Carbon Dioxide CO₂ | 1 | (g) |
日常示例
Tums antacid tablets work by this exact reaction, neutralizing excess stomach acid and providing relief from heartburn.
工业重要性
碳酸钙广泛用于酸中和,包括水处理、烟气脱硫,以及农业土壤pH调节。
属性
- 类型
- Acid-Base
- 可逆
- 否
- 能量
- 放热
- ΔH
- -15.3 kJ/mol
相关反应
Acetic Acid Dissociation in Water
Ammonia and Hydrochloric Acid
Ascorbic Acid and Sodium Hydroxide
Barium Hydroxide and Ammonium Thiocyanate (Endothermic)
Carbonic Acid and Sodium Hydroxide
Aluminum Hydroxide as Amphoteric Acid with NaOH
Aluminum Chloride and Chloride Ion (Lewis Acid-Base)
Hydrochloric Acid and Sodium Hydroxide Neutralization
Nitric Acid and Potassium Hydroxide Neutralization
Hydrochloric Acid and Barium Hydroxide
Frequently Asked Questions
What is the equation for Calcium Carbonate and Hydrochloric Acid (Antacid)?
The balanced equation is: CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂.
What type of reaction is Calcium Carbonate and Hydrochloric Acid (Antacid)?
Calcium Carbonate and Hydrochloric Acid (Antacid) is a acid-base reaction.
Is Calcium Carbonate and Hydrochloric Acid (Antacid) exothermic or endothermic?
Calcium Carbonate and Hydrochloric Acid (Antacid) is exothermic (releases energy). The enthalpy change (ΔH) is -15.3 kJ/mol.