Asked by Anonymous
does any solid pbcl2 form when 3.5mgNacl is dissolved in 0.250L of 0.12M of lead nitrate?
Answers
Answered by
bobpursley
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
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
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