12. Carefully move your filter paper with aspirin crystals to your wateh glass. Place them in your lab drawer to dry over the week. We will use these crystals for our lab next week. Concept Questions: 1. Write out a balanced reaction to show the formation of the ester that has the scent of peans, propyl ethanoate, from the corresponding carboxylic acid and alcohol. 2. Write out a balanced reaction to show the hydrolysis of the ester that has the scent of strawberries (ethyl butanoate). 3. We used an excess of icetic anhydride. Thus, the theoretical yield of aspirin is contingent upon your starting mass of salicylic acid. Using your mass of salicylic acid, calculate the theoretical yieid for aspirin. You will need this answer for the lab next week! Postlab: Your instructer must check your data, calculations and concept questionts berore you leave the lab. Your postlab is due one week after completion of this lab in Mastering Chenuisty, or when apecified by your instructor. Wrillen by A. Norick 31