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The pK(a) of acteylsalicylic acid (aspir...

The `pK_(a)` of acteylsalicylic acid (aspirin) is `3.5`. The pH of gastric juice in human stomach is about `2-3` and the pH in the small intestine is about 8. Aspirin will be:

A

unionised in the small intestine and in the stomach

B

completely ionised in the small intestine and in the stomach

C

ionised in the stomach and almost unionised in the small intestine

D

ionised in the small intestine and almost unionsied in theh stomach

Text Solution

Verified by Experts

The correct Answer is:
D
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The pH value of gasfric juice in humna stomach is about 1.8 and in intiestine , it is about 7.8. The pk_(a) value of aspirin is 3.5 Aspirin will be