Sodium Sulfide and Copper(II) Sulfate
Na2S + CuSO4 → CuS + Na2SO4
Visão geral
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.
Participantes
| Papel | Substância | Coeficiente | Estado |
|---|---|---|---|
| Reagente | Copper(II) Sulfate CuSO₄ | 1 | (aq) |
| Produto | Sodium Sulfate Na₂SO₄ | 1 | (aq) |
Exemplo do cotidiano
The black tarnish on silver jewelry involves a similar sulfide precipitation reaction when silver contacts sulfur-containing substances.
Importância industrial
A precipitação de sulfuretos é utilizada no tratamento de águas residuais da mineração para remoção de metais pesados. O sulfureto de cobre é também um mineral de minério de cobre.
Propriedades
- Tipo
- Double Replacement
- Reversível
- Não
- Energia
- Exotérmico
- ΔH
- -84,0 kJ/mol
Reações relacionadas
Iron(III) Chloride and Sodium Hydroxide
Calcium Chloride and Sodium Carbonate
Barium Chloride and Sodium Sulfate Precipitation
Calcium Hydroxide and Carbon Dioxide (Limewater Test)
Magnesium Hydroxide and Hydrochloric Acid (Antacid)
Lead Nitrate and Potassium Iodide (Golden Rain)
Copper(II) Sulfate and Sodium Hydroxide
Sodium Hydroxide and Iron(III) Chloride (Rust Color)
Sodium Hydroxide and Hydrochloric Acid Neutralization
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.