Zinc Sulfide Precipitation

ZnSO4 + Na2S → ZnS↓ + Na2SO4

개요

Zinc sulfate reacts with sodium sulfide to form a white precipitate of zinc sulfide (Ksp = 2 × 10⁻²⁵). ZnS occurs naturally as the mineral sphalerite, the most important zinc ore. Zinc sulfide phosphors are used in cathode ray tubes and luminous paints.

참여 물질

역할 물질 계수 상태
반응물 Zinc Sulfate ZnSO₄ 1 (aq)
생성물 Sodium Sulfate Na₂SO₄ 1 (aq)

일상 속 예시

Glow-in-the-dark toys and watch dials often use zinc sulfide phosphors doped with copper, which glow green after light exposure.

산업적 중요성

섬아연석(ZnS)은 세계에서 가장 중요한 아연 광석입니다. ZnS 형광체는 디스플레이 기술, X선 스크린, 발광 코팅에 사용됩니다.

성질

유형
Precipitation
가역 반응
아니오
에너지
발열
ΔH
-65.0 kJ/mol

관련 반응

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

Frequently Asked Questions

What is the equation for Zinc Sulfide Precipitation?
The balanced equation is: ZnSO₄ + Na₂S → ZnS↓ + Na₂SO₄.
What type of reaction is Zinc Sulfide Precipitation?
Zinc Sulfide Precipitation is a precipitation reaction.
Is Zinc Sulfide Precipitation exothermic or endothermic?
Zinc Sulfide Precipitation is exothermic (releases energy). The enthalpy change (ΔH) is -65.0 kJ/mol.