Zinc Sulfide Precipitation

ZnSO4 + Na2S → ZnS↓ + Na2SO4

Tổng quan

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.

Người tham gia

Vai trò Chất Hệ số Trạng thái
Chất phản ứng Zinc Sulfate ZnSO₄ 1 (aq)
Sản phẩm Sodium Sulfate Na₂SO₄ 1 (aq)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

Sphalerite (ZnS) is the world's most important zinc ore. ZnS phosphors are used in display technology, X-ray screens, and luminescent coatings.

Tính chất

Loại
Precipitation
Thuận nghịch
Không
Năng lượng
Tỏa nhiệt
ΔH
-65,0 kJ/mol

Phản ứng liên quan

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.