Precipitation reactions are useful in quantitative analysis.
The method works only if AgNO 3 is the limiting reagent and NaCl is the reagent in excess . To each of four 10. A graph of mmol AgCl versus mmol NaCl is shown in the Figure below. Mmole of AgCl precipitate versus mmole of NaCl added. Along line AB, NaCl is the limiting reagent, and along line BC, AgNO 3 is limiting.