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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Transcribed Image Text:A beaker with 2.00x10² mL of an acetic acid buffer with a
pH of 5.000 is sitting on a benchtop. The total molarity of
acid and conjugate base in this buffer is 0.100 M. A
student adds 4.90 mL of a 0.490 M HCl solution to the
beaker. How much will the pH change? The pKa of acetic
acid is 4.740.
Express your answer numerically to two decimal
places. Use a minus ( ) sign if the pH has
decreased.
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