Hw help An experiment similar to the one performed in this lab was carried out t

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Hw help

An experiment similar to the one performed in this lab was carried out to determine the Ksp of PbCl2, The dissolved chloride in the filtered solution was quantitatively precipitated as AgCl by the addition of excess AgN03 solution. The solid AgCl was filtered, dried, and weighed. The results were: Temperature of the solution = 20.2degreeC, Volume of PbCl2 solution analyzed = 24.40 mL, Mass of dry AgCl = 0.2991 grams. How many moles of AgCl were found? Enter your answer to the nearest 0.00001 mol.

Explanation / Answer

mass of dry AgCl=0.4301g

moles of AgCl=0.4301g/143.5g/mole=0.002997moles

Moles of Cl-=0.002997moles

moles of Pb2+=0.0015moles

volume of PbCl2 soln taken=23.53mL

Molarity of PbCl2=[PbCl2]=[Pb2+]=0.0015moles/0.02353L=0.063689M

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