Aspirin (acetylsalicylic acid, C9H8O4) is absorbed from the stomach in the free (un-ionozed) acid form. If a patient takes an antacid that adjusts the pH of the stomach contents to 2.95 and then takes two-grain aspirin tables (total 0.65 grams), how many grams of aspirin is available for immediate dissolution. Also, assume the aspirin does not change the pH of the stomach content. The pKa of aspirin is 3.50 and its formula weight is 180.2. a. None of these b. 0.248 grams c. 0.009 grams d. 0.5 grams e. 0.04 grams
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Aspirin (acetylsalicylic acid, C9H8O4) is absorbed from the stomach in the free (un-ionozed) acid form. If a patient takes an antacid that adjusts the pH of the stomach contents to 2.95 and then takes two-grain aspirin tables (total 0.65 grams), how many grams of aspirin is available for immediate dissolution. Also, assume the aspirin does not change the pH of the stomach content. The pKa of aspirin is 3.50 and its formula weight is 180.2.
a. None of these
b. 0.248 grams
c. 0.009 grams
d. 0.5 grams
e. 0.04 grams
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