Calcium Carbonate and Hydrochloric Acid

CaCO3 + 2HCl → CaCl2 + H2O + CO2

Visão geral

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.

Participantes

Papel Substância Coeficiente Estado
Reagente Calcium Carbonate CaCO₃ 1 (s)
Reagente Hydrochloric Acid HCl 2 (aq)
Produto Water H₂O 1 (l)
Produto Carbon Dioxide CO₂ 1 (g)

Exemplo do cotidiano

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

Importância industrial

Esta reação é utilizada no controlo de qualidade na extração de calcário, na produção de cloreto de cálcio para degelo de estradas e na neutralização de ácidos em tratamento de água.

Propriedades

Tipo
Double Replacement
Reversível
Não
Energia
Exotérmico
ΔH
-15,3 kJ/mol

Reações relacionadas

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.