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Chemistry
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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**At the equivalence point in a weak acid/strong base titration:** - ○ the pH is 7.0 - ○ there is a buffer and the titration curve is flat - ● the pH equals the pKa of the original acid - ○ the buffer has been depleted **Explanation:** This text explains the concept of the equivalence point in a titration involving a weak acid and a strong base. At this point, the correct statement given is that "the pH equals the pKa of the original acid." This indicates that, at the equivalence point, the solution primarily contains the conjugate base of the weak acid, resulting in a pH that reflects the inherent properties of the original acid. Other statements, such as "the pH is 7.0," are incorrect for this specific type of titration.
Transcribed Image Text:**At the equivalence point in a weak acid/strong base titration:** - ○ the pH is 7.0 - ○ there is a buffer and the titration curve is flat - ● the pH equals the pKa of the original acid - ○ the buffer has been depleted **Explanation:** This text explains the concept of the equivalence point in a titration involving a weak acid and a strong base. At this point, the correct statement given is that "the pH equals the pKa of the original acid." This indicates that, at the equivalence point, the solution primarily contains the conjugate base of the weak acid, resulting in a pH that reflects the inherent properties of the original acid. Other statements, such as "the pH is 7.0," are incorrect for this specific type of titration.
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