Hydrochloric Acid and Sodium Carbonate

2HCl + Na2CO3 → 2NaCl + H2O + CO2

Aperçu

Hydrochloric acid reacts with sodium carbonate (washing soda) to produce sodium chloride, water, and carbon dioxide gas. The carbonate ion is a Brønsted base that accepts two protons. The reaction proceeds in two steps: first forming bicarbonate, then decomposing carbonic acid to CO₂ and water.

Participants

Rôle Substance Coefficient État
Réactif Sodium Carbonate Na₂CO₃ 1 (s)
Réactif Hydrochloric Acid HCl 2 (aq)
Produit Carbon Dioxide CO₂ 1 (g)
Produit Water H₂O 1 (l)
Produit Sodium Chloride NaCl 2 (aq)

Exemple du quotidien

The fizzing that occurs when washing soda contacts acidic cleaning solutions is due to CO₂ evolution from this reaction.

Importance industrielle

This reaction is used to neutralize acid waste streams in industry, in the Solvay process for sodium carbonate production, and in water treatment.

Propriétés

Type
Acid-Base
Réversible
Non
Énergie
Exothermique
ΔH
-24,3 kJ/mol

Réactions associées

Hydrochloric Acid and Barium Hydroxide Acetic Acid and Sodium Acetate Buffer System Acetic Acid Dissociation in Water Ammonia and Hydrochloric Acid Ascorbic Acid and Sodium Hydroxide Barium Hydroxide and Ammonium Thiocyanate (Endothermic) Carbonic Acid and Sodium Hydroxide Aluminum Hydroxide as Amphoteric Acid with NaOH Aluminum Chloride and Chloride Ion (Lewis Acid-Base) Formic Acid and Sodium Hydroxide

Frequently Asked Questions

What is the equation for Hydrochloric Acid and Sodium Carbonate?
The balanced equation is: 2HCl + Na₂CO₃ → 2NaCl + H₂O + CO₂.
What type of reaction is Hydrochloric Acid and Sodium Carbonate?
Hydrochloric Acid and Sodium Carbonate is a acid-base reaction.
Is Hydrochloric Acid and Sodium Carbonate exothermic or endothermic?
Hydrochloric Acid and Sodium Carbonate is exothermic (releases energy). The enthalpy change (ΔH) is -24.3 kJ/mol.