Calcium Carbonate and Hydrochloric Acid

CaCO3 + 2HCl → CaCl2 + H2O + CO2

Genel Bakış

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.

Katılımcılar

Rol Madde Katsayı Hal
Reaktan Calcium Carbonate CaCO₃ 1 (s)
Reaktan Hydrochloric Acid HCl 2 (aq)
Ürün Water H₂O 1 (l)
Ürün Carbon Dioxide CO₂ 1 (g)

Günlük Örnek

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

Endüstriyel Önemi

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.

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.