The chief chemist of Victory Vinegar Works, Ltd., inter- views two chemists for employment. He states, “Qual- ity control requires that our high-grade vinegar contain 5.00 ± 0.01% acetic acid by mass. How would you analyze our product to ensure that it meets this specification?" Anne Dalton says, "I would titrate a 50.00-11L sample of the vinegar with 1.000 M NaOH, using phe- nolphthalein to detect the equivalence point to within ±0.02 mL of base." Charlie Cannizzarro says, "I would use a pH meter to determine the pH to ±0.01 pH units and interface it with a computer to print out the mass percentage of acetic acid." Which candidate did the chief chemist hire? Why?

The chief chemist of Victory Vinegar Works, Ltd., inter- views two chemists for employment. He states, “Qual- ity control requires that our high-grade vinegar contain 5.00 ± 0.01% acetic acid by mass. How would you analyze our product to ensure that it meets this specification?" Anne Dalton says, "I would titrate a 50.00-11L sample of the vinegar with 1.000 M NaOH, using phe- nolphthalein to detect the equivalence point to within ±0.02 mL of base." Charlie Cannizzarro says, "I would use a pH meter to determine the pH to ±0.01 pH units and interface it with a computer to print out the mass percentage of acetic acid." Which candidate did the chief chemist hire? Why?

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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