Lab report on gas chromatograph and the optical activity of carvones.

Optical Activity of Carvones Kyle Peterson Chem. 243a Matt Judd, Sec. 25 Date Performed: 10/29/03 Abstract: The objective of this experiment is to rehearse tout Chromatography to distinguish between two enantiomers of carvone from caraway anoint and spearment anoint and to find the 2 carvones ocular activity as puff up as percent carvone in spearment and caraway oil. It was be that S-carvone had an optical activity of 0.0047 and R-carvone had an optical activity of 0.516 and that spearment oil is 59% carvone and caraway oil is 100% carvone. Backround: Gas Chromatography separates organic fertiliser savors much in the same way as tower chromatography. The only differences nuclear number 18 that it uses a pathetic plash var. and a nonmoving liquid phase, and that the temperature of the gas system set up buoy be controlled. In a gas chromatograph the attempt is irradiation in with a syringe and is immediately desiccationized in a heat injection chamber. It is then introduced to a moving stream of gas called the carrier gas which sweeps the vaporized sample into a mainstay change with particles filled with liquid adsorbent. This column is usually filled with liquid that has a low vapor pressure and juicy boiling and is called the stationary phase.

This phase is as well as usually surface onto a support material very(prenominal) evenly and packed into a tubing apparatus as evenly as possible and placed in the temperature controlled oven. When organic solutions are passed finished the tubing van der Waals forces attract the unionized molecules especially if they finishure large molecular weights. Polar molecules can be attracted i n many ways. Interactions include salt forma! tion, coordination, hydrogen bonding, and even dipole-dipole. through and through these interactions the molecules in the vaporized sample will separate accordingly. at last at the end where the gases come out is a sensor which generates a signal... If you emergency to get a full essay, put up it on our website: OrderEssay.net

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