Magnesium Hydroxide Precipitation

MgCl₂ + 2NaOH → Mg(OH)₂↓ + 2NaCl

Descripción general

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.

Participantes

Rol	Sustancia	Coeficiente	Estado
Reactivo	Sodium Hydroxide NaOH	2	(aq)
Producto	Magnesium Hydroxide Mg(OH)₂	1	(s)
Producto	Sodium Chloride NaCl	2	(aq)

Ejemplo cotidiano

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

Importancia industrial

El hidróxido de magnesio se usa como antiácido, retardante de llama (sustituyendo compuestos halogenados) y en el tratamiento de aguas residuales para neutralización ácida y precipitación de metales.

Propiedades

Tipo: Precipitation
Reversible: No
Energía: Exotérmico
ΔH: -41,0 kJ/mol

Reacciones relacionadas

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.