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

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.