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JEE Main & Advanced Sample Paper JEE Main Sample Paper-18

  • question_answer
    The\[p{{K}_{a}}\]of acetylsalicylic acid (aspirin) is 3.5. The pH of gastric juice in human stomach is about 2-3 and pH in the small intestine is about 8. Aspirin will be

    A)  unionized in the small intestine and in the stomach.

    B)  completely ionized in the stomach and almost unionized in the small intestine.

    C)  ionized in the stomach and almost unionized in the small intestine.

    D)  ionised in the small intestine and almost unionised in the stomach.

    Correct Answer: D

    Solution :

     More ionized in basic medium and less ionized in acidic medium; common ion effect.


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