Calcium Fluoride Precipitation (Fluorite)

CaCl2 + 2NaF → CaF2↓ + 2NaCl

概要

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.

参加者

役割 物質 係数 状態
生成物 Calcium Fluoride CaF₂ 1 (s)
生成物 Sodium Chloride NaCl 2 (aq)

日常の例

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

産業上の重要性

蛍石はフッ素化学品の主要な原料です。製鋼におけるフラックス、フッ化水素酸の製造、そして光学部品に使用されています。

特性

タイプ
Precipitation
可逆的
いいえ
エネルギー
発熱性
ΔH
-18.0 kJ/mol

関連する反応

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.