Separation of Pain Reliever Components

Separation of Pain Reliever Components - Separation of Pain...

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Separation of Pain Reliever Components Chem 3361L/02 Feb 21, 2008 Lauren Tankesley, Maegan Chavez, Amber Langston Purpose: Extract caffeine, phenacetin, and aspirin from an unknown solution using a separatory funnel apparatus by controlling acid base reactions; then, test the properties of the extracted substances through infrared spectrometry and melting point. Data: Table 1: Melting Point of components expected melting point achieved melting point Caffeine 238 ºC 224-227 ºC Phenacetin 135 ºC 207-215 ºC Aspirin 135ºC 125-132.5 ºC Tables: IR Peaks Table 2: Phenacetin peak frequency cm-1 bond 3112.23 C-H 2953.98 C-H 1767.14 C=O Table 3: Aspirin peak frequency cm-1 bond 2955.95 C-H 1750.79 C=O Table 4: Caffeine peak frequency cm-1 bond 3112.01 C-H 2954.85 C-H 1766.37 C=O Table 5: Yield Caffeine .113 g Phenacetin .158 g Aspirin .8 g
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Table 6: Reagents molarity In water Density (g/cm 3 ) Hydrochloric acid 3 M soluble 1.066 Magnesium carbonate .5M soluble 2.958 Discussion: The initial, unknown solution was shaken in the separatory funnel with hydrochloric acid, followed by the drawing off of the bottom layer which contained the dichloromethane, aspirin, and phenacetin. The
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