The following is an HPLC separation of deuterated benzenes on a C18 column that 440 cm long. The mobile phase was 30% acetonitrile:70% water at 30oC.What is the mobile phase velocity?Find the retention factor k' for C6D6.Find the plate number and plate height for C6D6..Assuming that the peak widths for C6H5D and C6H6 are the same as that of C6D6., find the resolution for C6H5D and C6H6.Retention times for C6H5D and C6H6 are 193.3 and 194.3 respectively, Find the relative retention time and unadjusted relative retention time between C6H5D and C6H6. Absorbance at 210 nm →→Thiourea(unretained)t = 41.7 minH₂NSNH2188.1DminDDD45DW1/2=1.01min2АлAt=1.01min185190195Time (min)54100200Time (min)D300CD3CD3 CH378D

1. mobile phase velocity (<v>) = 10.552 cm/min 2. retention factor (k') of C6D6 is 3.511 3.…

Absorbance at 210 nm →→ Thiourea (unretained) t = 41.7 min H₂N S NH2 188.1 D min D D D 4 5 D W1/2= 1.01 min 2 Ал At= 1.01 min 185 190 195 Time (min) 5 4 100 200 Time (min) D 300 CD3 CD3 CH3 7 8 D

Absorbance at 210 nm →→ Thiourea (unretained) t = 41.7 min H₂N S NH2 188.1 D min D D D 4 5 D W1/2= 1.01 min 2 Ал At= 1.01 min 185 190 195 Time (min) 5 4 100 200 Time (min) D 300 CD3 CD3 CH3 7 8 D

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter13: Structure Determination: Nuclear Magnetic Resonance Spectroscopy

Section13.SE: Something Extra

Problem 31AP: When measured on a spectrometer operating at 200 MHz, chloroform (CHCl3) shows a single sharp...

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Question

The following is an HPLC separation of deuterated benzenes on a C18 column that 440 cm long. The mobile phase was 30% acetonitrile:70% water at 30^oC.
What is the mobile phase velocity?
Find the retention factor k' for C₆D₆.
Find the plate number and plate height for C₆D₆..
Assuming that the peak widths for C₆H₅D and C₆H₆ are the same as that of C₆D₆., find the resolution for C₆H₅D and C₆H₆.
Retention times for C₆H₅D and C₆H₆ are 193.3 and 194.3 respectively, Find the relative retention time and unadjusted relative retention time between C₆H₅D and C₆H₆.

Absorbance at 210 nm →→
Thiourea
(unretained)
t = 41.7 min
H₂N
S
NH2
188.1
D
min
D
D
D
4
5
D
W1/2=
1.01
min
2
Ал
At=
1.01
min
185
190
195
Time (min)
5
4
100
200
Time (min)
D
300
CD3
CD3 CH3
7
8
D

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