Abstract: . . .  arterioscleroic plaque, with subsequent infarctions and heart attack. Apparently, cis-trans isomerization, which is a side effect of catalytic hydrogenation, can kill you. In this experiment, we will hydrogenate olive oil, examine the properties of the product, and use infrared and nuclear magnetic resonance spectroscopy to explain the results. First, however, a brief discussion of fats and oils will be helpful. Fats and oils Catalytic Hydrogenation and Arteriosclerosis Page 2 2 Fats and oils are triglycerides, which consist of glycerol molecules esterified with three fatty acids. Fatty acids are essentially long hydrocarbon chains terminating in a carboxyl group. Stearic acid (18 carbons, saturated) is an example: Triglycerides are called fats if they are oils at (low melting point) and fats if they are solid (higher melting point). For instance, glyceryl tristearate, also called . . .
. . .  arterioscleroic plaque, with subsequent infarctions and heart attack. Apparently, cis-trans isomerization, which is a side effect of catalytic hydrogenation, can kill you. In this experiment, we will hydrogenate olive oil, examine the properties of the product, and use infrared and nuclear magnetic resonance spectroscopy to explain the results. First, however, a brief discussion of fats and oils will be helpful. Fats and oils Catalytic Hydrogenation and Arteriosclerosis Page 2 2 Fats and oils are triglycerides, which consist of glycerol molecules esterified with three fatty acids. Fatty acids are essentially long hydrocarbon chains terminating in a carboxyl group. Stearic acid (18 carbons, saturated) is an example: Triglycerides are called fats if they are oils at (low melting point) and fats if they are solid (higher melting point). For instance, glyceryl tristearate, also called . . .
. . .  pipet in the tube and conical flask, and approach the liquid surface gingerly. Too much gas will blow the liquid out of the flask into the tube, and you will have to rinse it down with cyclohexane and start over. Continue the evaporation until bout 0.5 mL of viscous oil remains (the initial volume of the olive oil before the cyclohexene was added). Finish the evaporation in vacuo. Almost all the solvent must be evaporated before taking this step. If it is not, the liquid may boil excessively when the vacuum is applied. Attach the Hickman still to the flask, seal the top of the still with a septum, and connect the side arm of the still of the vacuum line. Used this way, the still is simply a way to connect the flask to the vacuum line. Turn on the vacuum, and hold the flask in boiling water for 20 minutes to remove the last traces of solvent. Remove the flask from the water frequently, turn it on its side, and rotate it to spread the liquid over . . .
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