using sodsum In this experiment, you will be hydrolyzing methyl salicylate (oil
ID: 971340 • Letter: U
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using sodsum In this experiment, you will be hydrolyzing methyl salicylate (oil of wintergreen) hydroxide. Sodium salicylate will form initially, and then upon acidification of the reaction mixture, salicylic acid will formed. This reaction is the reverse of Experiment melting point will be used to characterize the product #27. Infrared spectroscopy and O. NaOH +CH OH OH Methyl Salicylate Salicylic Acid Substance Methyl Salicylate MA. de/mL M.P. B.P.CQ Refractive Index 152.2 1.174 223 1.5369 Salicylic Acid 138.1 159 Other Substances 20% Sodium hydroxide 3M Sulfuric acid Reagent alcohol Safety goggles are required for performing this lab exercise. Minimize the breathing of any vapors and skin contact of chemical reagents. Sodium hydroxide is strongly basic. Wash any skin exposed to sodium hydroxide. Sulfuric acid is strongly acidic. Wash any skin exposed to sulfuric acid. Handle any hot lab items with proper protection. Dispose chemical waste according to your instructor's directions. Wash your hands thoroughly when the lab exercise has been completed. 1. Place 4 mL ofa 20% sodium hydroxide solution into a 5-mL vial containing a spin vane. 2. Seal 5-mL vial with 20% sodium hydrox 3. Weigh and record of 5-mL with 20% sodium hydroxide. 32-6 SST ide with green cap with extra orange septum. e to the 5-mL vial and seal tightly. (Solids will form, but will dissolve as the vial is heated.) 5. Weigh and record weight of 5-mL vial containing methyl salicylate. 3 3 . 006 6. Place reaction vial in a heat block, pre-heated to 100-105 °C for 20 minutes with strong stirring 7. After the 20-minute reaction period, remove 5-m L vial and allow vial to air cool in the hood to room temperature before opening. Revised July 2013Explanation / Answer
oNCE THE SALICILIC ACID HAS BEEN REMOVED BY THE CRYSTLLISATION PROCESS,
THE METHANOL IS ONLY REMAINED IN THE PRODUCT MIXTURE.
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