118K Fractional Distillation

118K Fractional Distillation - Michael Tam(mht347...

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Michael Tam (mht347) 2/14/2011 Fractional Distillation Conclusion: Utilizing the method of fractional distillation, we separated a mixture of two chemicals, utilizing the difference in boiling points. We then analyzed the mixture using gas chromatography. Fractional distillation exploits two main concepts in separating a mixture. The differences in boiling points allowed one of the solvents to evaporate before the other solvent evaporated. The temperature gradient let the vapors condense and revaporize repeatedly, until there was a theoretically pure sample of “low boiling point solvent” vapor at the top. This is facilitated by a long distillation column. Because a compound doesn’t change in temperature when it is changing state, the boiling point can be recorded with a thermometer. Gas Chromatography is a separation method based on polarity. The injected liquid is vaporized and sent through a long pipe with a carrier gas. The pipe has a coating on it, and based on how polar
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This note was uploaded on 09/25/2011 for the course CH 118K taught by Professor Fjetland during the Spring '08 term at University of Texas.

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118K Fractional Distillation - Michael Tam(mht347...

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