Partition Coefficient of Benzoic Acid in Water and CH2Cl2

Partition Coefficient of Benzoic Acid in Water and CH2Cl2 -...

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2/ partition coefficient of benzoic acid in water and CH 2 Cl 2 part a / procedure 1 Place 50 mg of benzoic acid in a 3-mL conical vial. Add 600 μ L of CH 2 Cl 2 and 600 μ L of water. Cap the vial and gently shake until the benzoic acid dissolves. 2 Remove the organic layer with a Pasteur pipet and filter through a plug of MgSO4 into a weighed round-bottomed flask. Rinse the filter pipet with an additional 600 μ L of CH 2 Cl 2 . 3 Remove the solvent using the rotary evaporator. 4 Record the mass of the benzoic acid recovered from the CH 2 Cl 2 layer. part b / procedure 1 Place 50 mg of benzoic acid in a 3-mL conical vial. Add 600
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Unformatted text preview: L of CH 2 Cl 2 and 600 L of 10% aqueous NaHCO 3 . Cap the vial and gently invert the vial. Be sure to vent the cap to allow any gas to escape. Repeat until the benzoic acid dissolves. 2 Remove the organic layer with a Pasteur pipet and filter through a plug of MgSO4 into a weighed round-bottomed flask. Rinse the filter pipet with an additional 600 L of CH 2 Cl 2 . 3 Remove the solvent using the rotary evaporator. 4 Record the mass of the benzoic acid recovered from this CH 2 Cl 2 layer. health & safety notes CH 2 Cl 2 is a cancer suspect agent and an irritant....
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This note was uploaded on 03/10/2010 for the course CHEM 241 taught by Professor Crouch during the Spring '08 term at Dickinson.

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