does any solid pbcl2 form when 3.5mgNacl is dissolved in 0.250L of 0.12M of lead nitrate?

Answer 1

2NaCl aq +Pn(NO32)aq >>PbCl2 (s)+2Na +2 NO3
before the lead chloride forms, lead and chloride ions are in solution. for that case...

solubility of lead chloride: about 1.2 grams/100gwater.

ok, we have 250g water, so solubility is 3 grams.
we had grams of lead: .250*.12*207= 6.21, lets look at the chloride.
grams chloride: .035*35/58=.02grams Cl

mass of chloride ion in 3 grams (max allowed) of PbCL2, 3*45*2/278=.755
but we don't have that much CL ion supplied in solution, so no, no sold PbCl2 forms