gas chromotography worksheet

12 the attenuation should be increased 13 resolution

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12) The attenuation should be increased.
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13) Resolution is the degree of separation of the peaks. Therefore, good resolution means that the peaks should come out very sharp and should be well separated. 14) To correct overlapped peaks one should adjust the flow of the carrier gas on the GC by increasing the speed. 15) Three other types of chromatography that is used by organic chemists are Flash (Column) Chromatography, High Performance Liquid Chromatography, and Supercritical Fluid Chromatography. Gas chromatography’s mobile phase is gas, its’ stationary phase is liquid, and its’ general application is to purify complex mixtures. On the other hand, Flash chromatography’s mobile phase is eluent, its’ stationary phase is solid support, and its’ general application is too also purify complex mixtures. Part 2: GC Experiment 16) Attached 17) The peaks on the standard mixture were labeled in order from the letter A to E with peak A being the one closest to the air bubble. The retention time for peak A was 2.00 minutes, the retention time for peak B was 3.25 minutes, the retention time for peak C was 5.60 minutes, the retention time for peak D was 9.20 minutes, and the retention time for peak E was 15.20 minutes. The identities for each labeled peak is as follows, peak A is octane, peak B is nonane, peak C is decane, peak D is undecane, peak E is dodecane. The specific peaks were matched to specific alkanes by analyzing the retention times of each peak. The longer the retention time the more surface area the alkane has, and therefore meaning that the alkane with the longest chain would have the longest retention time. 18) The peaks in the unknown mixture were labeled with the letters A and B with peak A being that of the one closest to the air bubble. Peak’s A retention time was 3.60 minutes
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and the retention time of peak B was 14.85 minutes. The calculation of the retention time
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