Question

ayisut X Ester x 9Ester x acylsub acylsul Photo 9Ester%20Lab.pdf sity. G Google N Netflix U UNIDAYS ® Gabes D2L Google Docs Hulu 1) Draw out the mechanism of the following Fischer Esterification reaction 2) One of the reagents in this procedure is used in excess. Which one? 3) Why is used in excess? 4) Al roughly what temperature is the reaction run? (HINT: What is the solvent?) 5) What role in the reaction (starting material solvent, etc) does the sulfuric acid play? How does your mechanism show this? 6) During the extraction following the reaction, the organic layer is washed with a 5% aqueous solution of sodium bicarbonate. What does this remove from the organic layer? 7) If you were to take an Infrared Spectrum of an ester such as the one show below, what major peak would it share with the spectrum of at least one of the starting materials? 8) On the same spectrum what peak present in at least one of the starting material spectra would NOT be present in the product este spectrum? 9 Consider the boiling points of butyric acid, 1-pentanol and ethyl acetate ester)respectively 163 5°C 138°C and TC These three compounds have about the same molar masses. Why does the ester have such a low boiling point? 10) Consider the attached graphic about the smells of esters. Identify one ester that has a unique smelle, there are no other esters on the chart that have the same smell identify the ester and what elske o Be a 9

Answer 1

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