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May 22, 2013

# Homework Help: chemistry

Posted by J.T on Wednesday, August 3, 2011 at 12:11pm.

What mass of PbCl2 would be found in 0.48 L of a saturated solution of PbCl2 if the Ksp of PbCl2 is 1.6 x 10-5?

• chemistry - Drbob222, Wednesday, August 3, 2011 at 2:18pm

..........PbCl2(s) ==> Pb^2+ + 2Cl^-
x = solubility..x.......x.......2x
Ksp = (Pb^2+)(Cl^-)^2
Ksp = (x)(2x)^2
Solve for x which will give you the moles/L of PbCl2.
Mols/L x 0.48 L = moles in 480 mL.
Then moles x molar mass PbCl2 = grams PbCl2.

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