Homework Help: Chemistry

Posted by Sheri on Thursday, April 5, 2012 at 8:56am.

What is the pH of a saturated solution of lead(II) hydroxide?
The Ksp= 4.0 X 10-15.

a) 4.7 b) 7.2 c) 9.0 d) 9.1 e) 9.3

What should I do to solve for this? Thank you

Chemistry - DrBob222, Thursday, April 5, 2012 at 3:00pm
Let x = solubility of Pb(OH)2 in mols/L.
Pb(OH)2 ==> Pb^2+ + 2OH^-
....x........x.......2x
Ksp = (Pb^2+)(OH^-)^2
Substitute from the chart above and solve for x, find 2x, then convert to pH.
Chemistry - bob, Sunday, April 8, 2012 at 8:42pm
? lost- what chart?

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