Many drugs are either weak acids or weak bases. Acetaminophen is a weak base, the acid form of which has pKa=9.5. Estimate the ration of (protonated/deprotonated) acetaminophen in each of the physiologic environment below:  a. Stomach (pH ~ 2.0)  b. Small intestine (pH ~ 8.0)  c. Venous blood (pH ~ 7.35)

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter14: Acids And Bases
Section14.10: Additional Applied Acid-base Chemistry
Problem 14.13PSP
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Many drugs are either weak acids or weak bases. Acetaminophen is a weak base, the acid form of which has pKa=9.5. Estimate the ration of (protonated/deprotonated) acetaminophen in each of the physiologic environment below: 

a. Stomach (pH ~ 2.0) 

b. Small intestine (pH ~ 8.0) 

c. Venous blood (pH ~ 7.35) 

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