When aqueous solutions of barium nitrate (Ba(NO₃)₂) and potassium phosphate (K₃PO₄) are mixed, the precipitate that forms is barium phosphate (Ba₃(PO₄)₂).

Here's why:

* Double Displacement Reaction: This reaction is a double displacement reaction, where the cations and anions of the reactants switch partners.

* Solubility Rules: Barium phosphate is insoluble in water, according to solubility rules. This means it will precipitate out of solution as a solid.

The balanced chemical equation for the reaction is:

3 Ba(NO₃)₂(aq) + 2 K₃PO₄(aq) → Ba₃(PO₄)₂(s) + 6 KNO₃(aq)

Key Points:

* The other product, potassium nitrate (KNO₃), is soluble in water and remains in solution.

* The precipitate is a white solid.