Double displacement reaction is one in which both the reactants are ionic and the cations and anions of both these compounds switch their places. In a double displacement reaction, one of the product is either an insoluble precipitate or a gas or water as seen in case of neutralization reaction.
The given double displacement reaction is between Sodium phosphate [tex]Na_{3}PO_{4}[/tex]and copper sulfate [tex]CuSO_{4}[/tex]. When the ions of both compounds switch their places, we get Sodium sulfate [tex]Na_{2}SO_{4}[/tex] and copper phosphate [tex]Cu_{3}(PO_{4})_{2}[/tex] as the products.
The balanced chemical equation for this reaction can be represented as:
2[tex]Na_{3}PO_{4}[/tex](aq)+3[tex]CuSO_{4}[/tex](aq)-->3[tex]Na_{2}SO_{4}[/tex](aq)+[tex]Cu_{3}(PO_{4})_{2}[/tex](s)
