Cadmium Sulfide Precipitation (Yellow)

CdCl2 + Na2S → CdS↓ + 2NaCl

概要

Cadmium chloride reacts with sodium sulfide to form a bright yellow precipitate of cadmium sulfide (Ksp = 8 × 10⁻²⁷). CdS is known as cadmium yellow and was historically an important artist's pigment. The brilliant yellow color is due to its 2.4 eV bandgap.

参加者

役割 物質 係数 状態
生成物 Sodium Chloride NaCl 2 (aq)

日常の例

Many of Claude Monet's and Vincent van Gogh's paintings feature cadmium yellow pigment, prized for its brilliance and light-fastness.

産業上の重要性

CdSは顔料、光電池および照度計、薄膜太陽電池(CdTe/CdS)、そして量子ドット材料として使用されています。

特性

タイプ
Precipitation
可逆的
いいえ
エネルギー
発熱性
ΔH
-78.0 kJ/mol

関連する反応

Aluminum Hydroxide Precipitation Barium Carbonate Precipitation Barium Sulfate Precipitation Calcium Fluoride Precipitation (Fluorite) Calcium Phosphate Precipitation (Bone Mineral) Chromium(III) Hydroxide Precipitation Lead Carbonate Precipitation Lead Chloride Precipitation Calcium Carbonate Precipitation Iron(III) Hydroxide Precipitation

Frequently Asked Questions

What is the equation for Cadmium Sulfide Precipitation (Yellow)?
The balanced equation is: CdCl₂ + Na₂S → CdS↓ + 2NaCl.
What type of reaction is Cadmium Sulfide Precipitation (Yellow)?
Cadmium Sulfide Precipitation (Yellow) is a precipitation reaction.
Is Cadmium Sulfide Precipitation (Yellow) exothermic or endothermic?
Cadmium Sulfide Precipitation (Yellow) is exothermic (releases energy). The enthalpy change (ΔH) is -78.0 kJ/mol.