Monday, August 15, 2011
Beginners chem pH help?
A sample of hard water contains about 2.0 x 10^-5 M of Ca2+. A soluble fluoride-containing salt such as NaF is added to 'fluoridate' the water ( to aid in the prevention of dental caries). What is the maximum concentration of the F- that can be present without precipitating CaF2?
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