lab1 - Morgan Bailey Mb33295 Fractional Distillation...

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Morgan Bailey Mb33295 Fractional Distillation Discussion The first lab that we did was over fractional distillation and gas chromatography. A fractional distillation can be used to isolate liquid components from a mixture containing 2 or more volatile substances. In the experiment, we insulated the apparatus so we could get the temperature to go up faster. We started out by mixing cyclohexane with toluene. An important factor in this lab is the location of the thermometer bulb, which should be level with the bottom of the sidearm of the distillation head. If the thermometer is not high enough or too high, it can seriously alter the experiment and your temperature reading will be lower. This happened to me, my temperature started going up lower than other peoples when I compared data. We heated our still pot to the boiling point of cyclohexane, which is 81 degrees Celsius and the rate of distillation should be no more than one drop every 1 to 2 seconds. It is too fast if a drop of liquid can’t be seen from the end of the thermometer. As soon as the temperature deviated by more than 3 degrees
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This note was uploaded on 01/23/2012 for the course CH 210C taught by Professor Fetland during the Spring '07 term at University of Texas.

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lab1 - Morgan Bailey Mb33295 Fractional Distillation...

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