The Reaction:
CuSO₄(aq) + Na₃PO₄(aq) → Cu₃(PO₄)₂(s) + Na₂SO₄(aq)
Explanation:
* Double Displacement: In this type of reaction, the positive and negative ions of two reactants switch places.
* Precipitation: The reaction produces copper(II) phosphate (Cu₃(PO₄)₂) which is insoluble in water and forms a solid precipitate. This precipitate is typically a light blue color.
* Soluble Products: Sodium sulfate (Na₂SO₄) is soluble in water and remains dissolved in the solution.
Net Ionic Equation:
The net ionic equation focuses only on the species that participate in the formation of the precipitate:
3Cu²⁺(aq) + 2PO₄³⁻(aq) → Cu₃(PO₄)₂(s)
Key Points:
* The reaction is a classic example of a double displacement reaction leading to precipitation.
* The formation of the insoluble copper(II) phosphate precipitate is the driving force behind the reaction.
* This reaction can be used to identify the presence of either copper(II) ions or phosphate ions in a solution.