A student researcher performed a chromatographic separation of caffeine and aspartame. The retention time for caffeine, te, was found to be 200.8 s with a baseline peak width, we, of 16.1 s. The retention time for aspartame, ta, was 258.7 s with a baseline peak width, wa, of 20.6 s. The retention time for the unretained solvent methanol was 44.2 s. Calculate the average plate height, H, in micrometers for this separation, given that it was performed on a 22.1 cm long column. H = 88.2 Calculate the resolution, R, for this separation using the widths of the peaks. R = 3.16 Calculate the resolution if the number of theoretical plates were to increase by a factor of 2.5. μm
A student researcher performed a chromatographic separation of caffeine and aspartame. The retention time for caffeine, te, was found to be 200.8 s with a baseline peak width, we, of 16.1 s. The retention time for aspartame, ta, was 258.7 s with a baseline peak width, wa, of 20.6 s. The retention time for the unretained solvent methanol was 44.2 s. Calculate the average plate height, H, in micrometers for this separation, given that it was performed on a 22.1 cm long column. H = 88.2 Calculate the resolution, R, for this separation using the widths of the peaks. R = 3.16 Calculate the resolution if the number of theoretical plates were to increase by a factor of 2.5. μm
Macroscale and Microscale Organic Experiments
7th Edition
ISBN:9781305577190
Author:Kenneth L. Williamson, Katherine M. Masters
Publisher:Kenneth L. Williamson, Katherine M. Masters
Chapter9: Column Chromatography: Fluorenone, Cholesteryl Acetate, Acetylferrocene, And Plant Pigments
Section: Chapter Questions
Problem 5Q
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![A student researcher performed a chromatographic separation of caffeine and aspartame. The retention time for caffeine, te, was
found to be 200.8 s with a baseline peak width, we, of 16.1 s. The retention time for aspartame, ta, was 258.7 s with a baseline
peak width, wa, of 20.6 s. The retention time for the unretained solvent methanol was 44.2 s.
Calculate the average plate height, H, in micrometers for this separation, given that it was performed on a 22.1 cm long column.
H =
Calculate the resolution, R, for this separation using the widths of the peaks.
R =
88.2
R₂5N =
3.16
Calculate the resolution if the number of theoretical plates were to increase by a factor of 2.5.
3.533
Incorrect
μm](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F28163d2c-1b78-4962-9ace-f366cfc93545%2F316ed18d-db17-4934-8be2-95bff5015bc3%2Fiamdwd9_processed.png&w=3840&q=75)
Transcribed Image Text:A student researcher performed a chromatographic separation of caffeine and aspartame. The retention time for caffeine, te, was
found to be 200.8 s with a baseline peak width, we, of 16.1 s. The retention time for aspartame, ta, was 258.7 s with a baseline
peak width, wa, of 20.6 s. The retention time for the unretained solvent methanol was 44.2 s.
Calculate the average plate height, H, in micrometers for this separation, given that it was performed on a 22.1 cm long column.
H =
Calculate the resolution, R, for this separation using the widths of the peaks.
R =
88.2
R₂5N =
3.16
Calculate the resolution if the number of theoretical plates were to increase by a factor of 2.5.
3.533
Incorrect
μm
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