Fluoridation of drinking water is employed in many places
Chapter , Problem 17.118(choose chapter or problem)
Fluoridation of drinking water is employed in many places to aid in the prevention of tooth decay. Typically the F- ion concentration is adjusted to about 1 ppb. Some water supplies are also hard; that is, they contain certain cations such as Ca 2 + that interfere with the action of soap. Consider a case where the concentration of Ca 2 + is 8 ppb. Could a precipitate of CaF2 form under these conditions? (Make any necessary approximations.)
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