What happens when HCl gas is passed through a saturated PbCl2 solution?
More PbCl2 dissolves because chloride ions are added to the solution.
More PbCl2 dissolves because hydrogen ions are added to the solution.
Some PbCl2 precipitates because chloride ions are added to the solution.
Some PbCl2 precipitates because hydrogen ions are added to the solution.
When HCl is added to a saturated solution of PbCl2, the solubility of PbCl2 would decrease so precipitation would occur. The decrease in the solubility is due to the common ion effect or the presence of Cl- ions in both compounds.
