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
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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![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}-] Yuro; [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
2
ionic strength of 0.005 M? Activity coefficients can be
found in the table.
pH =
6.994](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F66f02499-6a2e-4c33-a9a6-3b6555c8b394%2Fab1153f9-c502-4165-97b3-ac1fe8e64c52%2Foqagat_processed.png&w=3840&q=75)
Transcribed Image Text: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}-] Yuro; [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
2
ionic strength of 0.005 M? Activity coefficients can be
found in the table.
pH =
6.994
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