Calculate the mass of AgNO3(s) that must be added to 0.500 L of a solution of 0.154 M NaCl solution to precipitate ‘all' of the chloride ion. The ‘all' means that we want to add the same number of moles of silver ion as we have moles of chloride ion present initially. As you know from lab, we call AgCl(s) an insoluble salt.