A) completely ionized in the small intestine and in the stomach
B) unionised in the small intestine and in the stomach
C) ionised in the small intestine and almost unionised in the stomach
D) ionised in the stomach and almost unionised in the small, intestine
Correct Answer: D
Solution :
Aspirin is a moderate acid \[(p{{K}_{a}}=3.5)\], hence is almost unionised in stomach due to strong acidic medium of it (because of \[HCl\]). It is due to common ion effect. While in small intestine, the medium is alkaline, hence aspirin will be sufficiently ionised in small intestine.
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