It will occur, since one of the products,
This looks like a possible double replacement reaction.
So the likely equation for your reaction is
To decide if a precipitate forms, you have to review the "Solubility Rules". The two important ones for this question are:
- All compounds of Group 1 elements are soluble.
- All sulfites (SO₃²⁻), carbonates (CO₃²⁻), chromates (CrO₄²⁻), and phosphates (PO₄³⁻) are insoluble except for those of NH₄⁺ and Group 1 metals.
NaCl is soluble (Rule 1).
Cu₃(PO₄)₂ is insoluble (Rule 2).
So the balanced equation is
The precipitate will be Cu₃(PO₄)₂.