When aqueous solutions of silver nitrate (AgNO3) and sodium chloride (NaCl) are mixed, a white precipitate of silver chloride (AgCl) is immediately formed. This is because silver ions (Ag+) from the silver nitrate solution react with chloride ions (Cl-) from the sodium chloride solution to form insoluble silver chloride. The chemical equation for this reaction is:

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

The precipitate of silver chloride is insoluble in water and has a characteristic white color. It is one of the most common ways to precipitate silver ions from a solution.