Answered: What is the pH of a 500 mL solution…

What is the pH of a 500 mL solution that is 0.40 M H2PO4- and 0.20 M HPO42-? pKa values for H3PO4 are 2.14, 7.20, and 12.14. What will be the new pH if 0.02 mole of KOH is added to the above buffer?

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter15: Complex Ion And Precipitation Equilibria

Section: Chapter Questions

Problem 23QAP

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Precipitation Titration

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What is the pH of a 500 mL solution that is 0.40 M H₂PO₄^-and 0.20 M HPO₄^2-? pKa values for H₃PO₄ are 2.14, 7.20, and 12.14. What will be the new pH if 0.02 mole of KOH is added to the above buffer?

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