fract dist

fract dist - Fractional Distillation Terpsichore...

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Unformatted text preview: Fractional Distillation Terpsichore Maras-Lindeman CHE 231-001 Experiment 3 Lab Drawer :U337 Lab TA: Matt Fields tmli222@uky.edu Student No-8240 Table of Contents Fractional Distillation 1 Purpose 1 Introduction and Theory 1 Structure of toluene and hexane 1 Vapor Pressure - Temperature Graph (depicting relation with respects to water) 3 Fractional Distillation Curve (Temperature to Fractions) 3 Phase Diagram of Hexane and Toluene (Temperature to Mole Fractions) 4 Experimental Results 6 Table 1: Weight of Sample 6 Table 2: Fraction weight during rst distillation. 6 Percent Recovery of Sample 6 Table 3: Graph Results of First Distillation 6 Fraction 1 7 Fraction 2 7 Fraction 3 7 Table 4: Graph Results for Second Distillation (Fraction1) 8 Re-distillation of Fraction 1 8 Discussion 9 Conclusion 9 Department of Chemistry -University of Kentucky- CHE 231-001 Fractional Distillation i Waste Disposal 10 Appendix A 11 Bibliography 12 Department of Chemistry -University of Kentucky- CHE 231-001 Fractional Distillation Waste Disposal 10 Appendix A 11 Bibliography 12 Department of Chemistry -University of Kentucky- CHE 231-001 Fractional Distillation ii Fractional Distillation Purpose Fractional distillation of a mixture in a 50:50 proportion of hexane and toluene was the main purpose of this experiment. The separation of these two components that were liquids was to be executed on the basis of their boiling points and in turn vapor pressures. Upon successful distillation the fractions collected were analyzed by a gas chromatography (GC) to observe if indeed a pure mixture (about 94.99% or greater) of either component was obtain at the end of the laboratory. Introduction and Theory One of the most common even till today and most ancient method of puriFcation is dis- tillation (Hart 2006) . As aforementioned distillation allows puriFcation of a substance and in turn also assists in the identiFcation of liquids of organic nature. In essence, distillation is a process that allows the separation of chemicals, physically, at different points throughout the process due to the different boiling points of each chemical or component. In this experiment the separation of hexane and toluene was executed using the method of fractional distillation. Structure of toluene and hexane Department of Chemistry -University of Kentucky- CHE 231-001 2011 Fractional Distillation 1 The basic idea of fractional distillation (Mayo 2010 ) is that once a mixture is being heated, and for this experiment a mixture with a ration of 50:50, the component with the smallest boiling point will be the Frst to vaporize, whilst the component with the higher boiling point will remain in liquid form. Though, as the temperature rises and reaches the second components boiling point that will then to begin to vaporize as well. Hence, the setup of the experiment was such that the initial components vapor, and the second components vapor in turn, passed through a condenser which turned the vapor to liquid form again allowing for extraction. the vapor to liquid form again allowing for extraction....
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fract dist - Fractional Distillation Terpsichore...

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