Yes, a precipitation reaction will occur when sodium chloride (NaCl) is mixed with silver nitrate (AgNO3).

Here's why:

* The reaction:

NaCl (aq) + AgNO3 (aq) → AgCl (s) + NaNO3 (aq)

* Formation of a precipitate: Silver chloride (AgCl) is insoluble in water, meaning it forms a solid that will precipitate out of the solution. This is why you see a cloudy white solid forming.

* Solubility rules: The solubility rules of ionic compounds help predict this outcome.

* Chlorides (Cl-) are generally soluble, except for silver chloride (AgCl), lead chloride (PbCl2), and mercury(I) chloride (Hg2Cl2).

* Nitrates (NO3-) are generally soluble.

Since AgCl is insoluble, it forms the precipitate. The other product, sodium nitrate (NaNO3), remains dissolved in solution.