Cadmium Sulfide Precipitation (Yellow)

CdCl₂ + Na₂S → CdS↓ + 2NaCl

Обзор

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.

Участники

Роль	Вещество	Коэффициент	Состояние
Продукт	Sodium Chloride NaCl	2	(aq)

Пример из жизни

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

Промышленное значение

CdS is used as a pigment, in photocells and light meters, in thin-film solar cells (CdTe/CdS), and as a quantum dot material.

Свойства

Тип: Precipitation
Обратимая: Нет
Энергия: Экзотермическая
ΔH: -78,0 kJ/mol

Связанные реакции

Aluminum Hydroxide Precipitation Barium Sulfate Precipitation 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 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.