Chemistry Maths Problem

[Matbatty-Challenged]

I am having difficulty with a Chemistry Maths problem at the moment and not sure how to solve it. Any help would be greatly appreciated.

Chemistry Maths Problem:

Calculate the solubility of Ca(OH)^2 in a 0.469M CaCl2 solution at 31⁰C, given that the Ksp of Ca(OH)^2 is 4.96 X10-6 at that temperature and give the answer in milli Molar units.

 

[Steven G]

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