EDTA is a hexaprotic system with the pKa values: -ooC-CH2 H,C-COO pKal 0.00, pK2 = 1.50, pKa3 = 2.00, pKa4 = 2.69, :N-CH2-CH2-N: pKa5 = 6.13, and pKa6 OOC-CH2 H2C-COO The distribution of the various protonated forms of EDTA EDTA (or Y4) will therefore vary with pH. For equilibrium calculations involving metal complexes with EDTA, it is convenient to calculate the fraction of EDTA that is in the completely unprotonated form, Y. This fraction is designated ays-. Calculate ayi- at two pH values. 4.41 pH = 3.60 %3D Incorrect 8.25 pH = 10.80 dy4- =

EDTA is a hexaprotic system with the pKa values: -ooC-CH2 H,C-COO pKal 0.00, pK2 = 1.50, pKa3 = 2.00, pKa4 = 2.69, :N-CH2-CH2-N: pKa5 = 6.13, and pKa6 OOC-CH2 H2C-COO The distribution of the various protonated forms of EDTA EDTA (or Y4) will therefore vary with pH. For equilibrium calculations involving metal complexes with EDTA, it is convenient to calculate the fraction of EDTA that is in the completely unprotonated form, Y. This fraction is designated ays-. Calculate ayi- at two pH values. 4.41 pH = 3.60 %3D Incorrect 8.25 pH = 10.80 dy4- =

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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