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Of the following solutions, which has the highest buffering capacity?           (A) 0.72 M NaH2PO4 and 0.85 M Na2HPO4;          (B) 0.20 M NaH2PO4 and 0.85 M Na2HPO4;          (C) 0.72 M NaH2PO4 and 0.25 M Na2HPO4;          (D) 0.20 M NaH2PO4 and 0.25 M Na2HPO4

Of the following solutions, which has the highest buffering capacity?           (A) 0.72 M NaH2PO4 and 0.85 M Na2HPO4;          (B) 0.20 M NaH2PO4 and 0.85 M Na2HPO4;          (C) 0.72 M NaH2PO4 and 0.25 M Na2HPO4;          (D) 0.20 M NaH2PO4 and 0.25 M Na2HPO4

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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Of the following solutions, which has the highest buffering capacity? 

         (A) 0.72 M NaH2PO4 and 0.85 M Na2HPO4;

         (B) 0.20 M NaH2PO4 and 0.85 M Na2HPO4;

         (C) 0.72 M NaH2PO4 and 0.25 M Na2HPO4;

         (D) 0.20 M NaH2PO4 and 0.25 M Na2HPO4

Expert Solution
Step 1

Buffer capacity is directly proportional to the concentration of buffer solution.

Higher the concentration of buffer, Higher will be the buffer capacity. Highly concentrated buffer can easily resist the change in pH .

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