Calcium Carbonate and Hydrochloric Acid (Antacid)
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CaCO3 + 2HCl → CaCl2 + H2O + CO2
概要
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.
参加者
| 役割 | 物質 | 係数 | 状態 |
|---|---|---|---|
| 反応物 | Calcium Carbonate CaCO₃ | 1 | (s) |
| 反応物 | Hydrochloric Acid HCl | 2 | (aq) |
| 生成物 | Water H₂O | 1 | (l) |
| 生成物 | Carbon Dioxide CO₂ | 1 | (g) |
日常の例
Tums antacid tablets work by this exact reaction, neutralizing excess stomach acid and providing relief from heartburn.
産業上の重要性
炭酸カルシウムは、水処理、排ガス脱硫、農業における土壌pH調整を含む酸中和の用途で広く使用されています。
特性
- タイプ
- Acid-Base
- 可逆的
- いいえ
- エネルギー
- 発熱性
- ΔH
- -15.3 kJ/mol
関連する反応
Hydrochloric Acid and Barium Hydroxide
Acetic Acid and Sodium Acetate Buffer System
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)
Formic Acid and Sodium 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.