Calcium Carbonate and Hydrochloric Acid

CaCO3 + 2HCl → CaCl2 + H2O + CO2

Übersicht

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.

Teilnehmer

Rolle Substanz Koeffizient Zustand
Reaktant Calcium Carbonate CaCO₃ 1 (s)
Reaktant Hydrochloric Acid HCl 2 (aq)
Produkt Water H₂O 1 (l)
Produkt Carbon Dioxide CO₂ 1 (g)

Alltägliches Beispiel

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

Industrielle Bedeutung

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.

Eigenschaften

Typ
Double Replacement
Reversibel
Nein
Energie
Exotherm
ΔH
-15,3 kJ/mol

Verwandte Reaktionen

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.