Experiment 2-Extractions

Experiment 2-Extractions - Daya Devanathan Nolan Graves...

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Daya Devanathan Nolan Graves 9/17/10 Experiments:4B and 4D Abstract:
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Liquid-liquid extraction is based on the transfer of a solute substance from one liquid phase into another liquid phase according to the solubility. For a given compound, a solubility difference between solvents is quantified as the "distribution coefficient.” In this first experiment, .051 g benzoic acid, 2.0 ml methylene chloride and 2.0 ml water were placed in a weighed conical vial and shaken for 1 minute. Then after the layers separated, the bottom layer, which was CH 2 Cl 2 , was transferred to a another vial. After drying the layer over granular anhydrous sodium sulfate, the methylene chloride solution was transferred, with a pipette, to a preweighed test tube, leaving the drying agent behind. The test tube was then heated in a hot water bath until all the methylene chloride evaporated, removed, cooled to room temperature when a solid was obtained, and then weighed to be 53.928 g. The amount of the solid that was
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This note was uploaded on 11/10/2010 for the course CHEM 24489 taught by Professor Larson during the Fall '10 term at Indiana Northwest.

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Experiment 2-Extractions - Daya Devanathan Nolan Graves...

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