Calcium Fluoride Precipitation (Fluorite)

CaCl₂ + 2NaF → CaF₂↓ + 2NaCl

Обзор

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.

Участники

Роль	Вещество	Коэффициент	Состояние
Продукт	Calcium Fluoride CaF₂	1	(s)
Продукт	Sodium Chloride NaCl	2	(aq)

Пример из жизни

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

Промышленное значение

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.

Свойства

Тип: Precipitation
Обратимая: Нет
Энергия: Экзотермическая
ΔH: -18,0 kJ/mol

Связанные реакции

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.