Calcium Chloride and Sodium Carbonate

CaCl₂ + Na₂CO₃ → CaCO₃ + 2NaCl

Tổng quan

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.

Người tham gia

Vai trò	Chất	Hệ số	Trạng thái
Chất phản ứng	Sodium Carbonate Na₂CO₃	1	(aq)
Sản phẩm	Calcium Carbonate CaCO₃	1	(s)
Sản phẩm	Sodium Chloride NaCl	2	(aq)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

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

Tính chất

Loại: Double Replacement
Thuận nghịch: Không
Năng lượng: Tỏa nhiệt
ΔH: -13,0 kJ/mol

Phản ứng liên quan

Iron(III) Chloride and Sodium Hydroxide Barium Chloride and Sodium Sulfate Precipitation Calcium Hydroxide and Carbon Dioxide (Limewater Test) Magnesium Hydroxide and Hydrochloric Acid (Antacid) Lead Nitrate and Potassium Iodide (Golden Rain) Copper(II) Sulfate and Sodium Hydroxide Sodium Hydroxide and Iron(III) Chloride (Rust Color) Sodium Hydroxide and Hydrochloric Acid Neutralization 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.