The specific conductivity of a 0.25 M solution of a weak organic acid HA was measured at KHA = 69.7 mS m¹. Additionally, various solutions of its sodium salt have been measured at the following values. CNaA / M KNAA/MS m-1 0.00219 17.98 0.00418 33.97 0.00787 62.74 0.01427 111.13 0.02597 196.44 a. Calculate the molar conductivity at infinite dilution of the sodium salt Aºm, NaA and of the acid Am, HA using the following values. Ʌm, NaCl = 126.3 S cm² mol-1 Ʌºm, HCI = 426.2 S cm² mol-1 b. Determine the degree of dissociation of the acid αHA. c. Calculate the pKA value of HA and guess the corresponding acid.

The specific conductivity of a 0.25 M solution of a weak organic acid HA was measured at KHA = 69.7 mS m¹. Additionally, various solutions of its sodium salt have been measured at the following values. CNaA / M KNAA/MS m-1 0.00219 17.98 0.00418 33.97 0.00787 62.74 0.01427 111.13 0.02597 196.44 a. Calculate the molar conductivity at infinite dilution of the sodium salt Aºm, NaA and of the acid Am, HA using the following values. Ʌm, NaCl = 126.3 S cm² mol-1 Ʌºm, HCI = 426.2 S cm² mol-1 b. Determine the degree of dissociation of the acid αHA. c. Calculate the pKA value of HA and guess the corresponding acid.

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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