Calcium Chloride and Sodium Carbonate

CaCl2 + Na2CO3 → CaCO3 + 2NaCl

概述

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.

参与者

角色 物质 系数 状态
反应物 Sodium Carbonate Na₂CO₃ 1 (aq)
产物 Calcium Carbonate CaCO₃ 1 (s)
产物 Sodium Chloride NaCl 2 (aq)

日常示例

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

工业重要性

该反应是工业软水、造纸(碳酸钙填料)以及索尔维制碱法生产碳酸钠的基础。

属性

类型
Double Replacement
可逆
否
能量
放热
ΔH
-13.0 kJ/mol

相关反应

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.