A hypochlorous acid buffer is prepared with 0.10 moles HCIO and 0.10 moles CIO- and pH = pKa = 7.40. Calculate the pH after addition of 0.010 moles of HCl. Give your answer to two decimal places. %3D
A hypochlorous acid buffer is prepared with 0.10 moles HCIO and 0.10 moles CIO- and pH = pKa = 7.40. Calculate the pH after addition of 0.010 moles of HCl. Give your answer to two decimal places. %3D
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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![**Buffer Calculation Problem**
A hypochlorous acid buffer is prepared with the following components:
- 0.10 moles of HClO
- 0.10 moles of ClO⁻
The initial conditions of the solution are described by:
- pH = pKa = 7.40
**Task:** Calculate the pH after the addition of 0.010 moles of HCl. Provide your answer to two decimal places.
**Instructions:** Use your knowledge of buffer systems and the Henderson-Hasselbalch equation to determine the new pH after the change in concentration.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F611625c6-9dd6-4a84-b59d-ca7aa1a3b1b7%2F73bae611-cd77-4963-ae29-1d09f31caf76%2Feyq8owc_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Buffer Calculation Problem**
A hypochlorous acid buffer is prepared with the following components:
- 0.10 moles of HClO
- 0.10 moles of ClO⁻
The initial conditions of the solution are described by:
- pH = pKa = 7.40
**Task:** Calculate the pH after the addition of 0.010 moles of HCl. Provide your answer to two decimal places.
**Instructions:** Use your knowledge of buffer systems and the Henderson-Hasselbalch equation to determine the new pH after the change in concentration.
Expert Solution
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Step 1
pH = pKa + log[salt]/[acid]
ClO- + HCl -----> HClO + Cl-
Number of moles of HClO formed = number of moles of HCl added
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