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The concentration of Ca ion in a town's water supply is 0.0020M (this water is referred to as hard water because it contains such a large concentration of Ca2+.) Suppose the water is to be fluorinated by the addition of NaF for the purpose of reducing tooth decay (the most common health policy in most US counties).

The concentration of Ca ion in a town's water supply is 0.0020M (this water is referred to as hard water because it contains such a large concentration of Ca2+.) Suppose the water is to be fluorinated by the addition of NaF for the purpose of reducing tooth decay (the most common health policy in most US counties).

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The concentration of Ca ion in a town's water supply is 0.0020M (this water is referred to as hard water because it contains such a large concentration of Ca2+.) Suppose the water is to be fluorinated by the addition of NaF for the purpose of reducing tooth decay (the most common health policy in most US counties). a. What is the maximum concentration of fluoride ion that can be achieved in the water before precipitation of CaF2 begins? b. How much NaF needs to be added to obtain the maximum concentration of F in this solution? 10- M (1 mg c. Will the water supply attain the level of F- recommended by the U.S. Public Health Services, about 5 fluoride per liter)?
Transcribed Image Text:The concentration of Ca ion in a town's water supply is 0.0020M (this water is referred to as hard water because it contains such a large concentration of Ca2+.) Suppose the water is to be fluorinated by the addition of NaF for the purpose of reducing tooth decay (the most common health policy in most US counties). a. What is the maximum concentration of fluoride ion that can be achieved in the water before precipitation of CaF2 begins? b. How much NaF needs to be added to obtain the maximum concentration of F in this solution? 10- M (1 mg c. Will the water supply attain the level of F- recommended by the U.S. Public Health Services, about 5 fluoride per liter)?
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