Calcium Fluoride Precipitation (Fluorite)

CaCl₂ + 2NaF → CaF₂↓ + 2NaCl

Visão geral

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.

Participantes

Papel	Substância	Coeficiente	Estado
Produto	Calcium Fluoride CaF₂	1	(s)
Produto	Sodium Chloride NaCl	2	(aq)

Exemplo do cotidiano

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

Importância industrial

A fluorite é a principal fonte de produtos químicos de flúor. É utilizada como fundente na siderurgia, no fabrico de ácido fluorídrico e em componentes óticos.

Propriedades

Tipo: Precipitation
Reversível: Não
Energia: Exotérmico
ΔH: -18,0 kJ/mol

Reações relacionadas

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.