Experiment 2 - FracDis

Experiment 2 - FracDis - Jin Bae CHEM-241L Fractional...

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Jin Bae CHEM-241L Fractional Distillation Performed: 9/14/2006 Written: 9/19/2006 Purpose The purpose of this experiment was to learn the techniques of fractional distillation and the theories behind it. Boiling points were used to purify known and unknown mixtures throughout the experiment. Reactions No chemical reaction is identified during the experiment. Tables of Reactants and Products Name Structure M.Weight B. Point M. Point Density Propanal 58.080 g /mol 46-50°C −81°C 0.81 g/cm Acetone 58.09 g/mol 56.3 °C −94.9 °C 0.79 g/cm 3 Methanol 32.04 g/mol 64.7 °C -97 °C 0.7918 g/cm 3 hexane 86.18 g/mol 69 °C −95 °C 0.6548 g/ml Carbon tetrachloride 153.82 g/mol 76.8 °C −22.9 °C 1.5842 g/ml cyclohexane 84.16 g/mol 80.74 °C 6.55 °C 0.779 g/ml 4-methyl 1-hexene 87.0°C Isopropyl methyl ketone 86.13g/mol 94°C -92 C Water 18.02 g/mol 100 °C 0 °C 1.0 g/cm 3 3-methyl cyclohexene 95g/mol 104.0°C Toluene 92.14 g/mol 110.6 °C −93 °C 0.8669 g/cm 3 1-octene 112.24 g/mol 121 °C -101.7 °C 0.715 g/cm 3 1,4-dimethyl cyclohexene 110g/mol 128.0°C p-xylene 106g/mol 134.0°C 1,5,6-trimethyl cyclohexene 143.0°C
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Graph1. Ethanol/Water 0 20 40 60 80 100 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 Volume of Distillate(mL) Temperature (° Graph2. Simple Distillation of Unknown 0 20 40 60 80 100 120 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.75 3 3.25 3.5 3.75 4 4.25 4.5 Volume of Distiallate(ml) Temperature( ˚ C) Jin Bae CHEM-241L Procedure The experiment involved three similar parts. Firstly, a mixture of ethanol and water of unknown percentage was obtained and a fractional distillation apparatus was constructed with a thermometer attached. After the ethanol/water mixture was heated until boiling commenced, observations of the amount of distillated liquid were recorded every 0.5 ml distillate obtained, along with the corresponding temperature. When abrupt
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This note was uploaded on 04/18/2008 for the course CHEM 241L taught by Professor Hunt during the Spring '08 term at UVA.

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Experiment 2 - FracDis - Jin Bae CHEM-241L Fractional...

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