1.

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

Answer»

completely ionised in the SMALL intestine and in the stomach
UNIONISED in the small intestine and in the stomach
ionised in the small intestine and almost unionised in the stomach
ionised in the stomach and almost unionised in the small intestine

Solution :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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