The Ka expression for the H,PO,/HPO;- buffer is given by the equation Ionic strength (µ, M) 0.005 0.010 0.050 | 0.10 YH* 0.933 0.914 0.86 0.83 [HPO-] YHPO;- [H*] YH* Ка [H,PO,] YH,PO; YHPO; 0.740 0.660 0.445 0.355 = 10-7.20 YH, PO, 0.928 0.902| 0.82 |0.775 What is the pH of a 3:4 mixture of H, PO, to HPO;- at an ionic strength of 0.005 M? Activity coefficients can be found in the table. pH = 6.994

The Ka expression for the H,PO,/HPO;- buffer is given by the equation Ionic strength (µ, M) 0.005 0.010 0.050 | 0.10 YH* 0.933 0.914 0.86 0.83 [HPO-] YHPO;- [H] YH Ка [H,PO,] YH,PO; YHPO; 0.740 0.660 0.445 0.355 = 10-7.20 YH, PO, 0.928 0.902| 0.82 |0.775 What is the pH of a 3:4 mixture of H, PO, to HPO;- at an ionic strength of 0.005 M? Activity coefficients can be found in the table. pH = 6.994

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter14: Acid- Base Equilibria

Section: Chapter Questions

Problem 120IP: A 10.00-g sample of the ionic compound NaA, where A is the anion of a weak acid, was dissolved in...

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