(h) or greater is achieved. (Fill in the A baseline separation is seen if a resolution of blank). Calculate the number of plates needed to increase resolution of the two peaks so this value for resolution is obtained, if k' and a remain constant.
(h) or greater is achieved. (Fill in the A baseline separation is seen if a resolution of blank). Calculate the number of plates needed to increase resolution of the two peaks so this value for resolution is obtained, if k' and a remain constant.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
question h only only
Transcribed Image Text:The figure below shows a portion of a GC chromatogram for a mixture of two aromatic
compounds labeled A and B. The separation employed a 2.50 meter packed column under
isothermal conditions (90 °C) and a flow rate of 10 mL/min.
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
Detector Signal
300.0
250.0
200.0
150.0
100.0
50.0
0.0
1.0
1.1
Unretained
1.2
1.5
time (min)
1.7
O
Find the retention times for A and B.
Find the times that components A and B spend in the stationary phase.
Calculate the retention factors for each peak.
Calculate the selectivity factor for the separation of A and B.
Find the full widths of each peak.
Calculate the resolution of the two peaks.
Find the average number of plates for the column.
A baseline separation is seen if a resolution of or greater is achieved. (Fill in the
blank). Calculate the number of plates needed to increase resolution of the two peaks so
this value for resolution is obtained, if k' and a remain constant.
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