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The pH value of gastric juice in human s...

The pH value of gastric juice in human stomach is about 1.8 and in the small intestine it is about 7.8. The `pK_(a)` value of aspirin is 3.5. aspirin will be

A

completely ionised 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

Text Solution

Verified by Experts

The correct Answer is:
C
In the stomach, the medium is acidic while in the small intestine the medium is basic. Hence aspirin `(pK_(a)" "3.5)` is almost unionized in stomach but ionized in the small intestine.
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