Calcium Carbonate and Hydrochloric Acid

CaCO3 + 2HCl → CaCl2 + H2O + CO2

概述

Calcium carbonate (limestone or marble) reacts with hydrochloric acid to produce calcium chloride, water, and carbon dioxide. This is the reaction used to test for carbonate minerals by adding acid and observing effervescence. Marble fizzes when acid is dropped on it.

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

Antacid tablets like Tums contain calcium carbonate, which neutralizes stomach acid via this reaction, releasing CO2 that may cause burping.

工业重要性

该反应用于石灰石采石的质量控制、生产用于道路除冰的氯化钙,以及水处理中的酸中和。

属性

类型
Double Replacement
可逆
否
能量
放热
ΔH
-15.3 kJ/mol

相关反应

Iron(III) Chloride and Sodium Hydroxide Ammonia and Hydrochloric Acid (White Smoke) Calcium Chloride and Sodium Carbonate Barium Chloride and Sodium Sulfate Precipitation Calcium Hydroxide and Carbon Dioxide (Limewater Test) Sodium Hydroxide and Iron(III) Chloride (Rust Color) Sodium Hydroxide and Hydrochloric Acid Neutralization Potassium Hydroxide and Sulfuric Acid Sodium Carbonate and Hydrochloric Acid Aluminum Hydroxide and Hydrochloric Acid

Frequently Asked Questions

What is the equation for Calcium Carbonate and Hydrochloric Acid?
The balanced equation is: CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂.
What type of reaction is Calcium Carbonate and Hydrochloric Acid?
Calcium Carbonate and Hydrochloric Acid is a double replacement reaction.
Is Calcium Carbonate and Hydrochloric Acid exothermic or endothermic?
Calcium Carbonate and Hydrochloric Acid is exothermic (releases energy). The enthalpy change (ΔH) is -15.3 kJ/mol.