9-20. (a) Calculate how many milliliters of 0.100 M HCI should be added to how many grams of sodium acetate dihy- drate (NaOAc· 2H2O, FM 118.06) to prepare 250.0 mL of 0.100 M buffer, pH 5.00. (b) If you mixed what you calculated, the pH would not be 5.00. Describe how you would actually prepare this buffer in the lab.

9-20. (a) Calculate how many milliliters of 0.100 M HCI should be added to how many grams of sodium acetate dihy- drate (NaOAc· 2H2O, FM 118.06) to prepare 250.0 mL of 0.100 M buffer, pH 5.00. (b) If you mixed what you calculated, the pH would not be 5.00. Describe how you would actually prepare this buffer in the lab.

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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Question

9-20. (a) Calculate how many milliliters of 0.100 M HCI
should be added to how many grams of sodium acetate dihy-
drate (NaOAc· 2H2O, FM 118.06) to prepare 250.0 mL of
0.100 M buffer, pH 5.00.
(b) If you mixed what you calculated, the pH would not be
5.00. Describe how you would actually prepare this buffer in
the lab.

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