K2HPO4-KH2PO4 buffer solution with water, vinegar, 0.85 M Na2CO3 sodium carbonateK2HPO4-K3PO4 buffer solution with water, vinegar, 0.85 M Na2CO3 sodium carbonateFor each buffered solution from above: A.) Describe how the pH changed for added vinegar relative to cabbage indicator. B.) Describe how the pH changed for added sodium carbonate relative to cabbage indicator. C.) Describe the pH of the three solutions (using numbers from tabs and color chart). D.) Calculate the pKa of each buffered solution. E.) Compare the pKa calculated to the pH found using the tabs (close, very different?)I am having trouble understanding this problem if someone can help me walk it through. thank you very much

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Answered: K2HPO4-KH2PO4 buffer solution with…

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter14: Equilibria In Acid-base Solutions

Section: Chapter Questions

Problem 25QAP: A sodium hydrogen carbonate-sodium carbonate buffer is to be prepared with a pH of 9.40. (a) What...

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K₂HPO₄-KH₂PO₄ buffer solution with water, vinegar, 0.85 M Na₂CO₃ sodium carbonate
K₂HPO₄-K₃PO₄ buffer solution with water, vinegar, 0.85 M Na₂CO₃ sodium carbonate

For each buffered solution from above: A.) Describe how the pH changed for added vinegar relative to cabbage indicator. B.) Describe how the pH changed for added sodium carbonate relative to cabbage indicator. C.) Describe the pH of the three solutions (using numbers from tabs and color chart). D.) Calculate the pK_a of each buffered solution. E.) Compare the pK_a calculated to the pH found using the tabs (close, very different?)

I am having trouble understanding this problem if someone can help me walk it through. thank you very much

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