Magnesium Hydroxide Precipitation

MgCl₂ + 2NaOH → Mg(OH)₂↓ + 2NaCl

Visão geral

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

Papel	Substância	Coeficiente	Estado
Reagente	Sodium Hydroxide NaOH	2	(aq)
Produto	Magnesium Hydroxide Mg(OH)₂	1	(s)
Produto	Sodium Chloride NaCl	2	(aq)

Exemplo do cotidiano

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

Importância industrial

O hidróxido de magnésio é utilizado como antiácido, retardante de chama (substituindo compostos halogenados) e no tratamento de efluentes para remoção de metais pesados.

Propriedades

Tipo: Precipitation
Reversível: Não
Energia: Exotérmico
ΔH: -41,0 kJ/mol

Reações 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.