Question

how

LITHICAL ILU POO L How does the pH of the buffered aspirin product compare to the pH of an unbuffered. aspirin? What compound is present in an aspirin if the sample gives a positive iron (III) chloride test (ferric chloride test)? Why is it recommended that aspirin be stored in a cool, dry place? Comment on the purity and yield of aspirin in your conclusion.

Answer 1

2. The pH of both buffered and unbuffered aspirin is the same. The only difference is that the buffered aspirin does not dissolve quickly in stomach and the drug still works because it is not absorbed in stomach but in the small intestine and the function of both is the same. So the form of aspirin doesn't matter.

3. Aspirin contains a phenolic group (-OH). Thus it gives a positive ferric chloride test.

4. Aspirin degrades at high temperatures and therfore it looses its effectiveness. So it has to be stored in a cool, dry place