posted by John .
Will a fluoride concentration of 1.0 mg/L be soluble in a water containing 200 mg/L of calcium?
This is what i found for ksp
CaF2<--> Ca(2+) +2F(-) Ksp=(x)(4x^2) where x=solubility Therefore, Ksp=3.7 x 10^-11
and for Qsp I am not sure how to go on about calculating that.