At 25.00 °C, What is the pH of an aqueous 2.50 x 10-8 M HCl solution? The pH of ANY aqueous acid will NEVER be greater than 7.00, REGARDLESS of the acid's concentration! This is because of the "LEVELING EFFECT" of pure water, whose [H+] = 1.0 x 107 M. Thus, the TOTAL [H+] of the solution will be: 1.0 x 107 M +2.50 x 10-8 M = 1.25 x 107 M, thus the pH of the 2.5 x 10-8 M HCl solution will be 6.90 because the contribution of H+ from the autoionization of pure water is greater than that for the very dilute acid, and MUST be accounted for!!!. NOTE: If the acid is di- (or tri-) protic, you must also take that into account!!!

At 25.00 °C, What is the pH of an aqueous 2.50 x 10-8 M HCl solution? The pH of ANY aqueous acid will NEVER be greater than 7.00, REGARDLESS of the acid's concentration! This is because of the "LEVELING EFFECT" of pure water, whose [H+] = 1.0 x 107 M. Thus, the TOTAL [H+] of the solution will be: 1.0 x 107 M +2.50 x 10-8 M = 1.25 x 107 M, thus the pH of the 2.5 x 10-8 M HCl solution will be 6.90 because the contribution of H+ from the autoionization of pure water is greater than that for the very dilute acid, and MUST be accounted for!!!. NOTE: If the acid is di- (or tri-) protic, you must also take that into account!!!

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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