Copper(II) Hydroxide Precipitation

CuSO₄ + 2NaOH → Cu(OH)₂↓ + Na₂SO₄

Descripción general

Copper sulfate reacts with sodium hydroxide to form a pale blue gelatinous precipitate of copper(II) hydroxide (Ksp = 2.2 × 10⁻²⁰). The precipitate can be dehydrated by heating to produce black copper(II) oxide. This reaction is the basis of the Biuret test for proteins.

Participantes

Rol	Sustancia	Coeficiente	Estado
Reactivo	Copper(II) Sulfate CuSO₄	1	(aq)
Reactivo	Sodium Hydroxide NaOH	2	(aq)
Producto	Sodium Sulfate Na₂SO₄	1	(aq)

Ejemplo cotidiano

The Biuret test for proteins uses Cu(OH)₂ formed from copper sulfate and NaOH; proteins turn the mixture violet due to copper-peptide bond complexation.

Importancia industrial

El hidróxido de cobre se utiliza como fungicida (mezcla de Burdeos), en soluciones de cobreado electrolítico y como precursor de catalizadores de óxido de cobre.

Propiedades

Tipo: Precipitation
Reversible: No
Energía: Exotérmico
ΔH: -59,0 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 Copper(II) Hydroxide Precipitation?

The balanced equation is: CuSO₄ + 2NaOH → Cu(OH)₂↓ + Na₂SO₄.

What type of reaction is Copper(II) Hydroxide Precipitation?

Copper(II) Hydroxide Precipitation is a precipitation reaction.

Is Copper(II) Hydroxide Precipitation exothermic or endothermic?

Copper(II) Hydroxide Precipitation is exothermic (releases energy). The enthalpy change (ΔH) is -59.0 kJ/mol.