Sodium Sulfide and Copper(II) Sulfate

Na2S + CuSO4 → CuS + Na2SO4

概要

Sodium sulfide reacts with copper(II) sulfate to form a black precipitate of copper(II) sulfide and sodium sulfate. CuS is extremely insoluble, making this a useful test for copper ions. The black precipitate forms instantly upon mixing.

参加者

役割 物質 係数 状態
反応物 Copper(II) Sulfate CuSO₄ 1 (aq)
生成物 Sodium Sulfate Na₂SO₄ 1 (aq)

日常の例

The black tarnish on silver jewelry involves a similar sulfide precipitation reaction when silver contacts sulfur-containing substances.

産業上の重要性

硫化物沈殿は鉱山排水処理における重金属除去に使用される。硫化銅は銅鉱石鉱物でもある。

特性

タイプ
Double Replacement
可逆的
いいえ
エネルギー
発熱性
ΔH
-84.0 kJ/mol

関連する反応

Iron(III) Chloride and Sodium Hydroxide Ammonia and Hydrochloric Acid (White Smoke) Calcium Carbonate and Hydrochloric Acid Calcium Chloride and Sodium Carbonate Barium Chloride and Sodium Sulfate Precipitation Calcium Hydroxide and Carbon Dioxide (Limewater Test) Sodium Hydroxide and Iron(III) Chloride (Rust Color) Sodium Hydroxide and Hydrochloric Acid Neutralization Potassium Hydroxide and Sulfuric Acid Aluminum Hydroxide and Hydrochloric Acid

Frequently Asked Questions

What is the equation for Sodium Sulfide and Copper(II) Sulfate?
The balanced equation is: Na₂S + CuSO₄ → CuS + Na₂SO₄.
What type of reaction is Sodium Sulfide and Copper(II) Sulfate?
Sodium Sulfide and Copper(II) Sulfate is a double replacement reaction.
Is Sodium Sulfide and Copper(II) Sulfate exothermic or endothermic?
Sodium Sulfide and Copper(II) Sulfate is exothermic (releases energy). The enthalpy change (ΔH) is -84.0 kJ/mol.