Magnesium Hydroxide Precipitation

MgCl2 + 2NaOH → Mg(OH)2↓ + 2NaCl

Übersicht

Magnesium chloride reacts with sodium hydroxide to form a white precipitate of magnesium hydroxide (Ksp = 5.6 × 10⁻¹²). The milky white suspension is commonly known as milk of magnesia. Mg(OH)₂ is a weak base that slowly neutralizes acid.

Teilnehmer

Rolle Substanz Koeffizient Zustand
Reaktant Sodium Hydroxide NaOH 2 (aq)
Produkt Magnesium Hydroxide Mg(OH)₂ 1 (s)
Produkt Sodium Chloride NaCl 2 (aq)

Alltägliches Beispiel

Milk of magnesia antacid is a suspension of this precipitate that neutralizes stomach acid gradually and acts as a gentle laxative.

Industrielle Bedeutung

Magnesium hydroxide is used as an antacid, flame retardant (replacing halogenated compounds), and in wastewater treatment for heavy metal removal.

Eigenschaften

Typ
Precipitation
Reversibel
Nein
Energie
Exotherm
ΔH
-41,0 kJ/mol

Verwandte Reaktionen

Aluminum Hydroxide Precipitation Barium Carbonate Precipitation Barium Sulfate Precipitation Cadmium Sulfide Precipitation (Yellow) Calcium Fluoride Precipitation (Fluorite) Calcium Phosphate Precipitation (Bone Mineral) Chromium(III) Hydroxide Precipitation Lead Carbonate Precipitation Lead Chloride Precipitation Iron(III) Hydroxide Precipitation

Frequently Asked Questions

What is the equation for Magnesium Hydroxide Precipitation?
The balanced equation is: MgCl₂ + 2NaOH → Mg(OH)₂↓ + 2NaCl.
What type of reaction is Magnesium Hydroxide Precipitation?
Magnesium Hydroxide Precipitation is a precipitation reaction.
Is Magnesium Hydroxide Precipitation exothermic or endothermic?
Magnesium Hydroxide Precipitation is exothermic (releases energy). The enthalpy change (ΔH) is -41.0 kJ/mol.