Copper(II) Hydroxide Precipitation

CuSO₄ + 2NaOH → Cu(OH)₂↓ + Na₂SO₄

Visão geral

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

Papel	Substância	Coeficiente	Estado
Reagente	Copper(II) Sulfate CuSO₄	1	(aq)
Reagente	Sodium Hydroxide NaOH	2	(aq)
Produto	Sodium Sulfate Na₂SO₄	1	(aq)

Exemplo do 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.

Importância industrial

O hidróxido de cobre é utilizado como fungicida (calda bordalesa), em soluções de cobreagem eletrolítica e como precursor de catalisadores de óxido de cobre.

Propriedades

Tipo: Precipitation
Reversível: Não
Energia: Exotérmico
ΔH: -59,0 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 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.