Calcium Carbonate and Hydrochloric Acid

CaCO3 + 2HCl → CaCl2 + H2O + CO2

概要

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

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

産業上の重要性

この反応は石灰石採石の品質管理、道路融雪用の塩化カルシウム製造、そして水処理における酸中和に使用されています。

特性

タイプ
Double Replacement
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

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.