Calcium Carbonate and Hydrochloric Acid

CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂

Tổng quan

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.

Người tham gia

Vai trò	Chất	Hệ số	Trạng thái
Chất phản ứng	Calcium Carbonate CaCO₃	1	(s)
Chất phản ứng	Hydrochloric Acid HCl	2	(aq)
Sản phẩm	Water H₂O	1	(l)
Sản phẩm	Carbon Dioxide CO₂	1	(g)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

This reaction is used in limestone quarrying quality control, in the production of calcium chloride for road de-icing, and in acid neutralization in water treatment.

Tính chất

Loại: Double Replacement
Thuận nghịch: Không
Năng lượng: Tỏa nhiệt
ΔH: -15,3 kJ/mol

Phản ứng liên quan

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.