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The pka of acetylsalicylic acid (aspirin...

The `pk_a` of acetylsalicylic 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 9. Aspirin wil be

A

unionized in the small intestine and in the stomach

B

Completely ionized in the small intestine and in the stomach

C

Ionized in the stomach and almost unionized in the small intestine

D

ionized in the small intestine and almost unionized in the stomach

Text Solution

Verified by Experts

The correct Answer is:
D
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The pH of simple sodium acetate and acetic acid buffer is given by, pH= pK_a + log [Salt]/[Acid] K_a of acetic acid = 1.8 xx 10^-5. If [Salt] = [Acid] =0.1 M, the pH of the solution would be about:

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MBD PUBLICATION-EQUILIBRIUM-QUESTION BANK
  1. Find the pH of a 0.01 M solution of acetic acid having degree of disso...

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  2. For weak acid strong base titration the indicator used is :

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  3. The pka of acetylsalicylic acid (aspirin) is 3.5. The PH of gastric ju...

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  4. The alkali not suitable for volumettric determination of HCl, using ph...

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  5. The hydrolysis of the salt of weak acid and strong base is known as:

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  6. The hydrolysis of the salt of strong acid and weak base is called:

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  7. Degree of hydrolysis of a salt of weak acid and a seak base:

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  8. The hydrolysis constant of a salt of weak acid and weak base is invers...

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  9. Ostwald dilution law is expressed as:

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  10. Phenolphthalein is a:

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  11. Which on ehas maximum solubility in liquid Ccl4:

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  12. The pH of gastric juice is normally:

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  13. Blood is:

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  14. To a mixture of acetic acid and sodium acetate a further amount of sod...

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  15. pH for the solution of salt undergoing anionic hydrolysis (say CH3COON...

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  16. Solubility of BaF2 in a solution of Ba(NO3)2 will be represented by th...

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  17. The blood buffers are most often involed in stabilizing the pH in pres...

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  18. Acidosis is diagnosed when blood pH:

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  19. The solution of AgCl is unsaturated if:

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  20. Select the correct order for the strength of bases given below:

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