Calcium Chloride and Sodium Carbonate

CaCl₂ + Na₂CO₃ → CaCO₃ + 2NaCl

Aperçu

Calcium chloride reacts with sodium carbonate to form insoluble calcium carbonate precipitate and sodium chloride. This is the basis of the water softening process where dissolved calcium ions are removed as insoluble carbonate. The white precipitate settles as chalk-like material.

Participants

Rôle	Substance	Coefficient	État
Réactif	Sodium Carbonate Na₂CO₃	1	(aq)
Produit	Calcium Carbonate CaCO₃	1	(s)
Produit	Sodium Chloride NaCl	2	(aq)

Exemple du quotidien

Water softening systems in homes remove calcium hardness by precipitating calcium carbonate, reducing limescale buildup in pipes and appliances.

Importance industrielle

This reaction is fundamental to industrial water softening, paper manufacturing (calcium carbonate filler), and the Solvay process for sodium carbonate production.

Propriétés

Type: Double Replacement
Réversible: Non
Énergie: Exothermique
ΔH: -13,0 kJ/mol

Réactions associées

Iron(III) Chloride and Sodium Hydroxide Ammonia and Hydrochloric Acid (White Smoke) Calcium Carbonate and Hydrochloric Acid 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 Chloride and Sodium Carbonate?

The balanced equation is: CaCl₂ + Na₂CO₃ → CaCO₃ + 2NaCl.

What type of reaction is Calcium Chloride and Sodium Carbonate?

Calcium Chloride and Sodium Carbonate is a double replacement reaction.

Is Calcium Chloride and Sodium Carbonate exothermic or endothermic?

Calcium Chloride and Sodium Carbonate is exothermic (releases energy). The enthalpy change (ΔH) is -13.0 kJ/mol.