# Informal Liquid-Liquid Extraction Lab

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Liquid-liquid extraction Informal report By: Afi Ahmed 100959296 Presented to: Devien Durbano CHM2203 May 26th 2014 Results and calculations Table 1: Mass of mixture containing benzoic acid, 2-naphthol, and hydroquinone dimethyl ether and recrystallization. Mass of mixture: 3.03g Compound | Original mass | Recrystallized mass | Benzoic Acid | 1.01 | 0.14 | 2-naphtol | 1.01 | 0.43 | Hydro. Dimethyl ether | 1.01 | 0.16 | With these values we are able to calculate the percent recovery for Benzoic acid, 2-napthol and the hydroquinone dimethyl ether. 1) Percent recovery for isolation of benzoic acid % Recovery = mass of recovered material _________________________________ x100% mass of starting material = (0.14/1.01) x100% = 13.86% That concludes that the percent recovery is 13.86%. 2) Percent recovery for isolation of benzoic acid % Recovery = mass of recovered material _________________________________ x100% mass of starting material = (0.43/1.01) x100% = 42.57% That concludes that the percent recovery is 42,57%. 3) Percent recovery for isolation of hydroquinone dimethyl ether % Recovery = mass of recovered material _________________________________ x100% mass of starting material = (0.16/1.01) x100% = 15.84% That concludes that the percent recovery is 15.84%. Table 2: : Experimental IR peaks compared to literature IR peaks for Benzoic acid Functional groups | Experimental peak (cm-1) | Literature peak (cm-1) | O-H | 3407-2563 | 3400-2564 | C=O | 1689 | 1689 | C-H |