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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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When measured with a F− ion-selective electrode with a Nernstian response at 25°C, the potential due to F− in unfluoridated groundwater in a nearby city was 40.7 mV more positive than the potential of tap water in a distant city. The distant city maintains its fluoridated water at the recommended level of 1.00 ± 0.05 mg F−/L. What is the concentration of F− in mg/L in groundwater in the nearby city? (Disregard the uncertainty. Assume that the Nernst potential is 0.05916 V.)
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