posted by ryan on .
A new antibiotic drug has been developed for human oral administration.
TECHNICAL DATA FOR ANTIBIOTIC AS FOLLOWS;
pKa = 2.1; pH = 2.0 (stomach); pH = 6 (intestines)
Will the drug dissociate in aqueous solutions as a weak or strong acid?
What does pH stomach and pH instestines mean? Is that the average pH in stomach and intestines for humans? If so, what does it have to do with the problem. If the pKa of the drug is pKa = 2.1, it is a weak acid with K = 7.9E-3, relatively strong as weak acids go but weak none the less.