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 Carbonate Precipitation Barium Sulfate Precipitation Cadmium Sulfide Precipitation (Yellow) 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 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.