Simple Distillation, Gas Chromatography: Preparation of Synthetic Banana Oil

2192 WordsFeb 24, 20119 Pages
Simple Distillation, Gas Chromatography: Preparation of Synthetic Banana Oil Introduction This experiment gave us the opportunity to work with a variety of new procedures as well as practice procedures that are new to us within the past few weeks of labs. Within the context of the scenario, we find that a distilling company that markets a popular banana liqueur is having problems. The banana plantation that they use to create their banana extract was hit hard by a hurricane and their reserves of extract are running low. It is our job to formulate a synthetic banana flavoring and determine whether it will work as a substitute for natural extract. The problem that the distilling company foresees is that the process used to create…show more content…
| - acetic acid | 3.745 | 0.45% | - isopentyl alcohol | 3.858 | 14.62% | - isopentyl acetate | 4.019 | 84.92% | Discussion The experiment began by mixing the initial 1.775g isopentyl alcohol with 2.3 mL acetic acid and about 5 drops sulfuric acid. This reaction mixture was then heated under reflux for an hour after boiling of the reaction mixture began. This first section involved several important pieces of information regarding the experiment as a whole, both conceptually what is going on, as well as what is happening experimentally. If we note the amount of acetic acid used, it would be realized that within the actual equation, there is a 1:1 ratio between the acetic acid and isopentyl alcohol needed to do the reaction. But, as noted in the introduction and in the scenario, There is an equilibrium constant of 4.2. This means that the esterification reaction that we are completing is reversible, and if we began with equimolar amounts of acetic acid and isopentyl alcohol, we would only have about two-thirds of our reactants converted to isopentyl acetate once the hour under reflux was completed. Because of this unfortunate equilibrium constant, the

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