For the precipitation of AgCl by `Ag^(+)` ions and HCl

For the precipiyation of AgCl by Ag^+ ions and HCl:

For the precipitation reaction of Ag^(+) ions with NaCl, which of the following statements is correct?

For the precipitation reaction of Ag ^(+) ions with NaCl, which of the following statements is correct ?

In the precipitate of AgCl, addition of Cl^(-) ions converts it to a colloidal solution. Here Cl^(-) fons act as ___________

In the quantitative estimation of Ag^(o+) ions as AgCl , solution of NaCl is used as the precipitating reagent. Why a large excess of NaCl should be avoided?

NaCl and AgNO_(3) are ionic solids and they readily dissodciate to from ions in solution. Ag^(+) ions combine with Cl^(-) ions to give white precipitate of AgCl. But C Cl_(4) is covaolent compound and does not give Cl^(-) ions in solution. Therefore, no reaction is possible between C Cl_(4) and AgNO_(3).