29. Determine the ph of a 0.50 M NaH2PO4 and 0.10 M N22HPO4 solution, pKa is7.21.A. 5,5O B. 6.5)C. 4,5OD.7.530. Determine the ph of a 0.30 M NaH2PO4 and 0.20 M H3PO4 solution. pka is2.16.O A. 1.3B. 2.3C. 3.3OD.4.3

The solution contains weak acid NaH2PO4 and its conjugate base Na2HPO4. So, this is a buffer…

29. Determine the ph of a 0.50 M NaH2PO4 and 0.10 M Na2HPO4 solution. pKa is 7.21. А. 5.5 В. 6.5 O C. 4.5 O D. 7.5 30. Determine the ph of a 0.30 M NaH2PO4 and 0.20 M H3P04 solution. pka is 2.16. А. 1.3 В. 2.3 С. 3.3 D. 4.3

29. Determine the ph of a 0.50 M NaH2PO4 and 0.10 M Na2HPO4 solution. pKa is 7.21. А. 5.5 В. 6.5 O C. 4.5 O D. 7.5 30. Determine the ph of a 0.30 M NaH2PO4 and 0.20 M H3P04 solution. pka is 2.16. А. 1.3 В. 2.3 С. 3.3 D. 4.3

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

Chapter14: Acids And Bases

Section: Chapter Questions

Problem 34Q: Which of the following statements is(are) true? Correct the false statements. a. When a base is...

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Question

29. Determine the ph of a 0.50 M NaH2PO4 and 0.10 M N22HPO4 solution, pKa is
7.21.
A. 5,5
O B. 6.5
)
C. 4,5
O
D.7.5
30. Determine the ph of a 0.30 M NaH2PO4 and 0.20 M H3PO4 solution. pka is
2.16.
O A. 1.3
B. 2.3
C. 3.3
OD.4.3

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