Example Extraction Conclusion 09

Example Extraction Conclusion 09 - Joe Student CHEM 308-005...

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Unformatted text preview: Joe Student CHEM 308-005 September 23, 2008 Conclusion: Solvent Extraction Experiment The primary purpose of this experiment was to separate a three gram sample of benzoic acid, biphenyl, and ethyl 4-aminobenzoate into its individual components using macroscale solvent extraction. The separation of the mixture was accomplished by exploiting the chemical properties of the compounds found within the mixture – an acid (benzoic acid), a base (ethyl 4- aminobenzoate), and a neutral substance (biphenyl). In their neutral uncharged forms, the three compounds are soluble in ether and insoluble or only slightly soluble in water. Upon addition of 6M HCl, the ethyl 4-aminobenzoate was protonated and soluble in the aqueous phase. Subsequent separation of the aqueous phase from the organic phase allowed for removal of the compound from the mixture. Similarly, addition of 6M NaOH to the organic phase containing the two remaining compounds served to deprotonate the benzoic acid, causing it to be water...
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