Barium Sulfate Precipitation

BaCl2 + Na2SO4 → BaSO4↓ + 2NaCl

概述

Barium chloride reacts with sodium sulfate to form an extremely insoluble white precipitate of barium sulfate (Ksp = 1.1 × 10⁻¹⁰). BaSO₄ is so insoluble that it is safe to ingest for medical imaging despite barium's toxicity. The precipitate forms instantly as a dense, finely divided white solid.

参与者

角色 物质 系数 状态
反应物 Sodium Sulfate Na₂SO₄ 1 (aq)
产物 Barium Sulfate BaSO₄ 1 (s)
产物 Sodium Chloride NaCl 2 (aq)

日常示例

Barium sulfate is the white liquid (barium meal) patients drink before gastrointestinal X-rays to make the digestive tract visible.

工业重要性

BaSO₄用作放射造影剂、油漆白色颜料(永固白)、油井钻井泥浆,以及塑料和纸张的填料。

属性

类型
Precipitation
可逆
否
能量
放热
ΔH
-24.5 kJ/mol

相关反应

Aluminum Hydroxide Precipitation Cadmium Sulfide Precipitation (Yellow) Calcium Phosphate Precipitation (Bone Mineral) Chromium(III) Hydroxide Precipitation Lead Carbonate Precipitation Magnesium Hydroxide Precipitation Copper Sulfide Precipitation Cobalt(II) Hydroxide Precipitation Mercury(II) Sulfide Precipitation (Vermilion) Iron(III) Hydroxide Precipitation

Frequently Asked Questions

What is the equation for Barium Sulfate Precipitation?
The balanced equation is: BaCl₂ + Na₂SO₄ → BaSO₄↓ + 2NaCl.
What type of reaction is Barium Sulfate Precipitation?
Barium Sulfate Precipitation is a precipitation reaction.
Is Barium Sulfate Precipitation exothermic or endothermic?
Barium Sulfate Precipitation is exothermic (releases energy). The enthalpy change (ΔH) is -24.5 kJ/mol.