Arsenic acid, a triprotic acid, has 3 pKa values (2.24, 6.96, and 11.50). What is the predominate form of arsenic acid at a pH of 4.00? H3A H2A– A3– The predominate form of arsenic acid cannot be determined from the given information. HA2–

Arsenic acid, a triprotic acid, has 3 pKa values (2.24, 6.96, and 11.50). What is the predominate form of arsenic acid at a pH of 4.00? H3A H2A– A3– The predominate form of arsenic acid cannot be determined from the given information. HA2–

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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Question

Arsenic acid, a triprotic acid, has 3 pK_a values (2.24, 6.96, and 11.50). What is the predominate form of arsenic acid at a pH of 4.00?

H₃A
H₂A^–
A^3–
The predominate form of arsenic acid cannot be determined from the given information.
HA^2–

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