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at 25 degrees C calcium fluoride has a solubility product constant Ksp= 3.0*10/\(-11). If enough CaF2 is added to saturate the following solutions, determine the equilibrium concentrations of Ca/\2+ (aq):

in pure water
in .15 M KF
What happened to the solubility of the CaF2 when there was a salt with a common ion added to the water? Explain

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