[seabreeze]

Hi guys,

I'm asked to do the following:

The attached gas chromatograms are form two different distillations: the first involving a hexane / toluene mixture, and the second a hexane/ 1-butanol mixture.  Two fractions have been analysed from each solvent mixture, taken from the lower and upper boiling ends of each distillation.

The peaks have been identified using their retention times on the GC trace.  Integration of the peaks gives the relative ratio of the two solvents in the analysed fraction from the distillation.  Peaks marked with a “*” indicate unknown impurities in the GC trace.

YOU ARE REQUIRED TO USE THE DATA TO COMMENT ON THE RELATIVE SUCCESS OF THE TWO DISTILLATIONS.  Space is provided on the report sheet.


and here are the attached images
I missed the lesson on gas chromatography and cant find anything on the internt to supplement so any help is apreciate
thanks guys!

http://img264.imageshack.us/img264/6618/picture1da9.png
http://img134.imageshack.us/img134/9716/picture2gp9.png

[Yggdrasil]

Gas chromatography basically separates the components of a mixture in order to tell you what compounds are in the mixture and how much of each compound is in the mixture.

Here are some questions to guide you to an answer.  1)  What is the purpose of a distillation?  2)  what would you expect to see on a gas chromatogram of a successful distilation?

[Darkness]

Before making any quatitave assumptions look into the response factor for each known compound.