What is the pH of a 1.0 L solution that is 0.50 M PO43- and 0.50 M HPO42-? (The pKa values for H3PO4are: 2.14, 7.2, and 12.4 respectively)If 0.01 moles of OH- is added to the above buffer, what will the new pH be? Change of volume is negligible.If 0.01 moles of OH- is added to 1.0 L of water, what will the new pH be? Change of volume is negligible.

As per the Henderson–Hasselbalch equation:pH = pKa + log [PO4-3]/[HPO4-2]pKa = 12.4 as ( third…

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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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What is the pH of a 1.0 L solution that is 0.50 M PO₄^3- and 0.50 M HPO₄^2-? (The pKa values for H₃PO₄are: 2.14, 7.2, and 12.4 respectively)
- If 0.01 moles of OH^- is added to the above buffer, what will the new pH be? Change of volume is negligible.
- If 0.01 moles of OH^- is added to 1.0 L of water, what will the new pH be? Change of volume is negligible.

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