Calcium Fluoride Precipitation (Fluorite)
CaCl2 + 2NaF → CaF2↓ + 2NaCl
Tổng quan
Calcium chloride reacts with sodium fluoride to precipitate calcium fluoride (Ksp = 3.5 × 10⁻¹¹). CaF₂ occurs naturally as the mineral fluorite (fluorspar), which gives fluorescence its name because fluorite was the first substance observed to fluoresce under UV light.
Người tham gia
| Vai trò | Chất | Hệ số | Trạng thái |
|---|---|---|---|
| Sản phẩm | Calcium Fluoride CaF₂ | 1 | (s) |
| Sản phẩm | Sodium Chloride NaCl | 2 | (aq) |
Ví dụ thực tế
Fluorite crystals glow blue or green under UV light, which is why we call this phenomenon fluorescence, named after this mineral.
Tầm quan trọng công nghiệp
Fluorite is the primary source of fluorine chemicals. It is used as a flux in steelmaking, in the manufacture of hydrofluoric acid, and in optical components.
Tính chất
- Loại
- Precipitation
- Thuận nghịch
- Không
- Năng lượng
- Tỏa nhiệt
- ΔH
- -18,0 kJ/mol
Phản ứng liên quan
Aluminum Hydroxide Precipitation
Barium Sulfate 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
Iron(III) Hydroxide Precipitation
Frequently Asked Questions
What is the equation for Calcium Fluoride Precipitation (Fluorite)?
The balanced equation is: CaCl₂ + 2NaF → CaF₂↓ + 2NaCl.
What type of reaction is Calcium Fluoride Precipitation (Fluorite)?
Calcium Fluoride Precipitation (Fluorite) is a precipitation reaction.
Is Calcium Fluoride Precipitation (Fluorite) exothermic or endothermic?
Calcium Fluoride Precipitation (Fluorite) is exothermic (releases energy). The enthalpy change (ΔH) is -18.0 kJ/mol.