Lab #4 - Extraction - Extraction ABSTRACT In this experiment an Acid-Base extraction was performed on a mixture containing the compounds Benzoic Acid

Lab #4 - Extraction - Extraction ABSTRACT In this...

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ExtractionABSTRACTIn this experiment, an Acid-Base extraction was performed on a mixture containing the compounds: Benzoic Acid, p-Nitroaniline, and neutral Azobenzene. After the process was completed, three separate extracts were collected (Acidic, Basic, and an Organic). Through vacuum filtration, a 76.54% yield of Benzoic Acid was collected from the Acidic extract, and a 87.69% yield from the Basic Extract. The Organic extract, through distillation and evaporation, produced a 82.39 % yield of Azobenzene . The experimental melting ranges were recorded for each compound and were within the satisfactory ranges of a pure sample.
INTRODUCTION1With the use of Extraction techniques, one will be able to separate and purify a solid, liquid, or gaseous substance from a mixture. The techniques rely on the general theory of chromatography1, where phase distribution in the mixture will have each component show a different affinity towards one phase over another. This distribution is only successful if one phase moves, while the other is stationary. The extraction technique preformed in this experiment is liquid-liquid extraction1, in which the original liquid contains the dissolved organic material, and the other liquid is the extracting liquid. However, these two liquids must be immiscible with a visible boundary. This immiscible property allows for the

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