Homework Help: chemistry

Posted by caity on Wednesday, May 2, 2007 at 11:59pm.

Calulate the molar solubility of Al(OH)3 in water. (Ksp = 3 x 10^-34)

Al(OH)3(s) ==>Al^+3 + 3OH^-

Ksp = (Al^+3)(OH^-)^3 = 3E-34

Let x = molar solubility of Al(OH)3
then x molar = (Al^+3)
and 3x molar = (OH^-)
Plug in to Ksp and solve for x. Don't forget to cube the 3x.

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