Calcium Fluoride Precipitation (Fluorite)

CaCl2 + 2NaF → CaF2↓ + 2NaCl

Ikhtisar

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.

Peserta

Peran Zat Koefisien Keadaan
Produk Calcium Fluoride CaF₂ 1 (s)
Produk Sodium Chloride NaCl 2 (aq)

Contoh Sehari-hari

Fluorite crystals glow blue or green under UV light, which is why we call this phenomenon fluorescence, named after this mineral.

Pentingnya dalam Industri

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.

Sifat

Jenis
Precipitation
Dapat Dibalik
Tidak
Energi
Eksoterm
ΔH
-18,0 kJ/mol

Reaksi Terkait

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.