Sample Problem 19.12
(continued)
Use the Ksp for Cu(OH)2 to find the amount of Cu2+ remaining in solution.
[Cu2+] = Ksp/[OH-]2 = 2.2 x 10-20/(5.6 x 10-5)2 =
7.0 x 10-12 M
Since the solution was 0.10 M CuCl2, virtually none of the Cu2+ remains in solution.
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