chemistry

Where can I find the answers to these questions in my text, "fundamentals of analytical chemistry" by skoog, west, holler and crouch.
1. Why is acetylsalicylic acid analyzed using back titration?
2. Discuss the importance of simmering the tablet in the NaOH solution for 20 minutes
3. During simmering, the aspirin sample should not be allowed to dry. Why?

I have a copy of the 6th edition of Fundamentals of Analytical Chemistry but that one does not have Crouch as one of the authors. I looked under aspirin, acetylsalicylic acid, analysis of, etc and found no references in my edition. You might look under those same subjects in the index of your copy. You may have already done that. I don't know the procedure you are using so I can't help there either. Sorry, but thanks for using Jiskha.

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