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Friday, November 8, 2013

Simple Distillation and Gas Chromatography

Simple Distillation and Gas Chromatograpy In this experiment we picture the methods for purification of volatile compounds and that gas chromatography may be hand to quantitatively determine the relative proportions of volatile compounds in all(prenominal) sample. To do this, we performed a simple distillation of a untested compartmentalisation of Hexane-Heptane. We then self-contained three different split ups from the distillation, enter the temperatures to apiece one time. Then using chromatograms, we comp ard the three fractions we obtained and determined the percentages of Hexane-Heptane for individually fraction salt away. In a gas chromatogram, the bill areas are considered to be directly proportional to the amound of sample passing the detector in the gas chromatogram. The table below shows the areas for each prime in each of our printed Chromatograms and the temperature at which we collected each fraction. fall apart #Peak #Area of Pea k Temperature at which Fraction was collected 112353548.7429.9-37.7 degrees C 21No Peak Recorded38.6-39.9 degrees C 31153621.2639.9-49.2 degrees C 2 1431547.8239.9-49.2 degrees C left all over(p)field Over12896057.41Room Temperature These peaks were taken with a Hexane-Heptane sort We can read some(prenominal) things from these results.
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showtime is that the largest area of a peak that we recorded was the material that was left over from our distillation. This tells us that there was still a toilet of mixture that was not distilled. Most likely, because Heptane has a higher change state point t han Hexane, closely of the solution still l! eft over that was recorded in the GC was Heptane. An opposite thing that sticks away is that there was no peak recorded in our gage fraction. This could mean several different things. Because no peak was recorded, it leads us to believe that a bad fraction was taken. Because this was the second fraction taken, there should be two peaks on the GC, one for Hexane and the other for Heptane. This is not the case. This could be...If you indirect request to get a salutary essay, order it on our website: OrderCustomPaper.com

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