Dichloromethane Lab Report

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Separation of a Mixture of Benzoic Acid and Naphthalene by Liquid-Liquid Extraction. Place 5.0 ml of 20mg aqueous solution of benzoic acid and naphthalene and 5.0 ml of 5% aqueous sodium bicarbonate solution to a test tube. Covering the top of the test tube shake completely, periodically venting the tube. Once the layers have separated, use a pipet to remove the top layer and place into a different test tube. Place 2.0 ml of 5% aqueous sodium bicarbonate into the original tube and shake as before. Using a pipet remove the top layer to the other test tube. Place 0.2 ml of dichloromethane into the second test tube, after the layers separate remove the bottom layer and discard it. Add chloromethane to the second tube until the solution is neutral
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