the molar solubility of calcium hydroxide, ca(OH)2 is 1.842 x 10^-5M. What is the Ksp value of calcium hydroxide?
Ca(OH)2 -------------------> Ca+2 + 2 OH-
S 2S
Ksp = [Ca+2][OH-]^2
= S x (2S)^2
= 4 S^3
= 4 x (1.842 x 10^-5)^3
= 2.50 x 10^-14
Ksp of Ca(OH)2 = 2.50 x 10^-14
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