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Answer to Question #31578 in Inorganic Chemistry for Tarcio

Question #31578
A sample of hard water contains about 2.0 x 10^-3 M Ca^2+ . A soluble Fluoride containing salt such as NaF is added to fluoridate the water. what is the maximum concentratio0n of F- that can be presented without precipitation oc CaF2? Ksp for CaF2=5.3 x 10^ -11
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