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 gasolene Chromatography to distinguish between two enantiomers of carvone from caraway anoint and spearment fossil oil and to find the 2 carvones optic activity as well(p) 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 native trys much in the same way as tower chromatography. The only differences atomic number 18 that it uses a despicable plash word form and a nonmoving liquid phase, and that the temperature of the gas system nates be controlled. In a gas chromatograph the sample distribution is gun for hire in with a syringe and is immediately vaporizationized in a heat injection c hamber. It is then introduced to a moving stream of gas called the carrier gas which sweeps the vaporized sample into a column 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 overly usually surface onto a support material precise 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 leftoverure large molecular weights. Polar molecules bottomland be attracted in many ways. Interactions include salt for! mation, coordination, total heat 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 requirement to get a full essay, put up it on our website: OrderEssay.net

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