Copper(II) Hydroxide Precipitation

CuSO4 + 2NaOH → Cu(OH)2↓ + Na2SO4

개요

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.

참여 물질

역할 물질 계수 상태
반응물 Copper(II) Sulfate CuSO₄ 1 (aq)
반응물 Sodium Hydroxide NaOH 2 (aq)
생성물 Sodium Sulfate Na₂SO₄ 1 (aq)

일상 속 예시

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.

산업적 중요성

수산화구리는 살균제(보르도액), 구리 전기도금 용액, 그리고 산화구리 촉매의 전구체로 사용됩니다.

성질

유형
Precipitation
가역 반응
아니오
에너지
발열
ΔH
-59.0 kJ/mol

관련 반응

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.