Reference no: EM13181099
An experiment was performed to determine the solubility and the solubility product constant of lead(II) chloride (gmm = 278.10).The equilibrium involved is
PbCl2(s) -->Pb2+(aq) + 2Cl-(aq)
The dissolved chloride in the filtered solution was quantitatively precipitated as AgCl by the addition of excess AgNO3 solution. The solid AgCl was filtered from solution, dried, and weighed. The following data were obtained for a sample of the filtered, saturated solution.
temperature of solution 20.2
volume of PbCl2 solution analyzed, mL 25.00
mass of dry AgCl, g 0.2543
Calculate:
number of moles
AgCl _____
Cl- _____
Pb2+ _____
[Cl-] in PbCl2 solution, M _____
[Pb2+] in PbCl2 solution, M _____
Ksp _____
solubility of PbCl2 in g per 100 mL _____
chemistry handbook value for solubility at 20 degrees 1.15 per 100 mL ____
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