The weak acid, boric acid was used to prepare four buffer solutions as indicated below: H3 BO3 = H+ + H₂ BO3 Buffer #1: 0.1M borate (H₂BO3) and 0.3M boric acid (H3BO3) Buffer #2: 0.02M borate (H₂BO3) and 0.02M boric acid (H3BO3) Buffer #3: 0.1M borate (H₂BO3) and 0.2M boric acid (H3BO3) Buffer #4: 0.2M borate (H₂BO3) and 0.1M boric acid (H3BO3) Which of the following are true? Buffer #1 has a higher buffer capacity than Buffer #2 Buffer #4 has a lower pH than Buffer #3. The pH of Buffer #2 is the same as the pKa of boric acid (H3BO3). The pH of Buffer #3 is higher than the pH of Buffer #1. The pH of Buffer #1 is lower than the pH of Buffer #2.

The weak acid, boric acid was used to prepare four buffer solutions as indicated below: H3 BO3 = H+ + H₂ BO3 Buffer #1: 0.1M borate (H₂BO3) and 0.3M boric acid (H3BO3) Buffer #2: 0.02M borate (H₂BO3) and 0.02M boric acid (H3BO3) Buffer #3: 0.1M borate (H₂BO3) and 0.2M boric acid (H3BO3) Buffer #4: 0.2M borate (H₂BO3) and 0.1M boric acid (H3BO3) Which of the following are true? Buffer #1 has a higher buffer capacity than Buffer #2 Buffer #4 has a lower pH than Buffer #3. The pH of Buffer #2 is the same as the pKa of boric acid (H3BO3). The pH of Buffer #3 is higher than the pH of Buffer #1. The pH of Buffer #1 is lower than the pH of Buffer #2.

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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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

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The weak acid, boric acid was used to prepare four buffer solutions as indicated
below:
H3 BO3 ⇒ H+ + H₂ BO₂
Buffer #1: 0.1M borate (H₂BO3) and 0.3M boric acid (H3BO3)
Buffer #2: 0.02M borate (H₂BO3) and 0.02M boric acid (H3BO3)
Buffer #3: 0.1M borate (H₂BO3) and 0.2M boric acid (H3BO3)
Buffer #4: 0.2M borate (H₂BO3) and 0.1M boric acid (H3BO3)
Which of the following are true?
Buffer #1 has a higher buffer capacity than Buffer #2
Buffer #4 has a lower pH than Buffer #3.
The pH of Buffer #2 is the same as the pKa of boric acid (H3BO3).
The pH of Buffer #3 is higher than the pH of Buffer #1.
The pH of Buffer #1 is lower than the pH of Buffer #2.

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