Calcium Chloride and Sodium Carbonate

CaCl₂ + Na₂CO₃ → CaCO₃ + 2NaCl

Visão geral

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.

Participantes

Papel	Substância	Coeficiente	Estado
Reagente	Sodium Carbonate Na₂CO₃	1	(aq)
Produto	Calcium Carbonate CaCO₃	1	(s)
Produto	Sodium Chloride NaCl	2	(aq)

Exemplo do cotidiano

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

Importância industrial

Esta reação é fundamental para o amaciamento industrial de água, o fabrico de papel (carga de carbonato de cálcio) e o processo Solvay para a produção de carbonato de sódio.

Propriedades

Tipo: Double Replacement
Reversível: Não
Energia: Exotérmico
ΔH: -13,0 kJ/mol

Reações relacionadas

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.