5 A 0.400-g sample of toothpaste was boiled with a 50.00 mL solution containing citrate buffer and NaCl to extract the fluoride ion. After cooling, the solution was diluted to exactly 100.00 mL. The potential of a selective ion/calomel system in a 25.00 mL aliquot of the sample was found to be -0.1823 V. Addition of 5.00 mL of a solution containing 0.00107 mg F/mL caused the potential to change to -0.2446V. Calculate the weight-percent F in the sample

5 A 0.400-g sample of toothpaste was boiled with a 50.00 mL solution containing citrate buffer and NaCl to extract the fluoride ion. After cooling, the solution was diluted to exactly 100.00 mL. The potential of a selective ion/calomel system in a 25.00 mL aliquot of the sample was found to be -0.1823 V. Addition of 5.00 mL of a solution containing 0.00107 mg F/mL caused the potential to change to -0.2446V. Calculate the weight-percent F in the sample

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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