Lab 1 - 1 Scott Wise January 25, 2007 Lab 1: Seperation of...

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1 Scott Wise January 25, 2007 Lab 1: Seperation of a Mixture of Organic Compounds by Liquid-liquid Extraction Objective: To extract various compounds by liquid-liquid extraction, and then to comment on the purity of the compounds by determination of melting points and thin layer chromatography. Reactions: Procedure: Refer to Pages 25-27 of Chemistry 232 Laboratory Manual 1 Figure 1: Procedure and Observations: Procedure Observations 1.0 g of crude phenanthrene was dissolved in 20 mL of ethanol and brought to a boil. Hot water was added drop by drop until the solution turned cloudy. During the addition of water to the dissolved phenanthrene in ethanol, the solution would turn cloudy briefly, and then return to a transparent state.
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Physical Properties: Figure 2:Reagents of liquid-liquid extraction Compound MW (g / mole) Used Mole Physical and Safety Data p -Chloroaniline 127.568 1.0 g 0.0078 Mp: 72.5 ºC, density: 1.43 g/mL. bp 232 ºC Very toxic if inhaled, swallowed or absorbed through the skin. May act as a human carcinogen. Readily absorbed through the skin. May act as a sensitizer. Phenanthrene
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This note was uploaded on 09/18/2008 for the course CHEM 232 taught by Professor Briggs during the Spring '08 term at University of Victoria.

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Lab 1 - 1 Scott Wise January 25, 2007 Lab 1: Seperation of...

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