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In an aqueous solution of a weak acid, HA, the assumption is often made that [HA]equilibrium = [HA]initial- This approximation is reasonable if the initial concentration of the acid is sufficiently large compared to K. What multiple of K, must the initial concentration of a weak acid exceed, for the initial concentration and the equilibrium concentration to be within 9.98 percent of each other?

In an aqueous solution of a weak acid, HA, the assumption is often made that [HA]equilibrium = [HA]initial- This approximation is reasonable if the initial concentration of the acid is sufficiently large compared to K. What multiple of K, must the initial concentration of a weak acid exceed, for the initial concentration and the equilibrium concentration to be within 9.98 percent of each other?

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter16: Solubility And Precipitation Equilibria
Section: Chapter Questions
Problem 70AP
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Use the References to access important values if needed for this question. In an aqueous solution of a weak acid, HA, the assumption is often made that [HA]equilibrium = [HA]nitial: This approximation is reasonable if the initial concentration of the acid is sufficiently large compared to Ka. What multiple of K, must the initial concentration of a weak acid exceed, for the initial concentration and the equilibrium concentration to be within 9.98 percent of each other?
Transcribed Image Text:Use the References to access important values if needed for this question. In an aqueous solution of a weak acid, HA, the assumption is often made that [HA]equilibrium = [HA]nitial: This approximation is reasonable if the initial concentration of the acid is sufficiently large compared to Ka. What multiple of K, must the initial concentration of a weak acid exceed, for the initial concentration and the equilibrium concentration to be within 9.98 percent of each other?
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