Calculate: Retention factor (k), Separation factor (α), and Resolution (R) Gas Cromatograyphy of a mixture containing...
Calculate: Retention factor (k), Separation factor (α), and Resolution (R)
Gas Cromatograyphy of a mixture containing benzene, methyl toluene and chlorotoluene
First Peak : 4.242
Second Peak : 5.645
Third Peak : 7.577
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Calculate: Retention factor (k), Separation factor (α), and
Resolution (R)
Gas Cromatograyphy of a mixture containing...
A student researcher performed a chromatographic separation of caffeine and aspartame. The retention time for caffeine,...
A student researcher performed a chromatographic separation of caffeine and aspartame. The retention time for caffeine, tc,was found to be 207.6 s with a baseline peak width, wc, of 16.2 s. The retention time for aspartame, ta, was 253.7 s with a baseline peak width, wa, of 18.7 s. The retention time for the unretained solvent methanol was 40.7 s. Calculate the average plate height, H, in micrometers for this separation, given that it was performed on a 27.3 cmlong...
A gas containing nitrogen, benzene, and toluene is in equilibrium with a liquid mixture of 40...
A gas containing nitrogen, benzene, and toluene is in equilibrium with a liquid mixture of 40 mol% benzene and 60 mol% toluene at 80°C and 21 atm a) Calculate the gas phase mole fraction of benzene. (8 points) b) Calculate the gas phase mole fraction of toluene. (8 points c) Calculate the volumetric flow rate (L/s) of the gas mixture if it were being continuously removed from the process at a rate of 200 mol/s. (Do not assume the gas...
A student researcher performed a chromatographic separation of caffeine and aspartame. The retention time for caffeine,...
A student researcher performed a chromatographic separation of caffeine and aspartame. The retention time for caffeine, is, was found to be 218.0 s with a baseline peak width, wc, of 14.4 s. The retention time for aspartame, 1., was 250.5 s with a baseline peak width, w of 21.1 s. The retention time for the unretained solvent methanol was 40.4 s. Calculate the average plate height, H, in micrometers for this separation, given that it was performed on a 27.7...
4. The compounds in a mixture separated by GC can be identified by their retention times....
4. The compounds in a mixture separated by GC can be identified by their retention times. If you Suructor nad not told you which peak in the GC chromatogram corresponded to which alker you didn't know the boiling points of the alkenes, how could you determine the identity or each peak by its retention time? Identities of the components in a mixture separated by GC can also be determined by the technique called "spiking". Suppose you had run a chromatogram...
12. (16 pts) A researcher performed a chromatographic separation of caffeine and aspartame using methanol as...
12. (16 pts) A researcher performed a chromatographic separation of caffeine and aspartame using methanol as the mobile phase. The retention time for methanol was 20.05 The retention time for caffeine (t.) was found to be 215.2 s with a peak width (w.) of 11.5 s and the retention time for aspartame (t) was 276.8 s with a peak width (w.) of 21.8 s. A) Calculate the resolution (R) for this separation B) Calculate the retention factor (k) for aspartame.
2.0 EXAMPLEI : The following data were obtained for a separation using a 0.5 mm id,...
2.0 EXAMPLEI : The following data were obtained for a separation using a 0.5 mm id, 10 meter open tubular column: Retention time (min) Peak base width (min) Methane Cyclohexane 8.0 0.65 Methylcyclohexane 8.17 0.72 Toluene 10.2 0.95 a)Draw the chromatogram and label the peaks b) Calculate the number of theoriticla plate for each compound (N) and palte height (H) c) Calculate the capacity factor for each compound d) the resolution between tow consequent peak R, e) Calculate the length...
EXERCISE 6: Two chemical species, A and B are separated by isothermal gas chromatography, using a...
EXERCISE 6: Two chemical species, A and B are separated by isothermal gas chromatography, using a 2.00 m column having 5000 theoretical plates at a flow rate of 15.0 ml / min. The peak of unabsorbed air appears after 30 s; the peak of A appears after 5 min and that of B after 12 min (a) Calculate the dead volume VM of the column, and the retention volumes Va and VB. (b) Calculate the reduced volumes V’a and V'B...
Table 2: Alcohol and Ketone Standards GC Retention Times GC#: Retention time Alcohol Standard Mixture Phent...
Table 2: Alcohol and Ketone Standards GC Retention Times GC#: Retention time Alcohol Standard Mixture Phent ion= 2.05Smin low Peak 1 Compound Name: athanol Rapesnal utanal aclapeatanal 4.755min oilng 6.895min .230 min Peak 2 Compound Name: Peak 3 Compound Name: Peak 4 Compound Name: GC#:1 Ketone Standard Mixture Retention time 2.575un Peak 1 Compound Name: Acclono Butanon a Pentanone 2tHex anon Peak 2 Compound Name: min Peak 3 Compound Name: 615 min 1D. 307 min Peak 4 Compound Name: Part...
Problem 4.40 Sequential Distillation A liquid mixture containing 30.0 mole% benzene (B), 25.0% toluene (T), and...
Problem 4.40 Sequential Distillation A liquid mixture containing 30.0 mole% benzene (B), 25.0% toluene (T), and the balance xylene (X) is fed to a distillation column. The bottoms product contains 98.0 mole% X and no B, and 85.5% of the X in the feed is recovered in this stream. The overhead product is fed to a second column. The overhead product from the second column contains 91.0% of the B in the feed to this column. The composition of this...
Hand Calculations (40 %)-(must not exceed 2 pages) The process involves the separation of a binary mixture containing heptane and ethylbenzene using a countercurrently operated continuous fractio...
Hand Calculations (40 %)-(must not exceed 2 pages) The process involves the separation of a binary mixture containing heptane and ethylbenzene using a countercurrently operated continuous fractionation unit. A feed at a flowrate of 252 mol/h containing 43 wt% heptane and 57 wt% ethyl benzene is to be fractionated at 1 bar to give a distillate with 95 mol% heptane and a bottom product with 95 m0196 ethyl benzene. The reflux ratio will be 70% more than the minimum. The...
A gas containing nitrogen, benzene, and toluene is in equilibrium with a liquid mixture of 40 mol% benzene and 60 mol% toluene at 80°C and 21 atm a) Calculate the gas phase mole fraction of benzene. (8 points) b) Calculate the gas phase mole fraction of toluene. (8 points c) Calculate the volumetric flow rate (L/s) of the gas mixture if it were being continuously removed from the process at a rate of 200 mol/s. (Do not assume the gas...
A student researcher performed a chromatographic separation of caffeine and aspartame. The retention time for caffeine, is, was found to be 218.0 s with a baseline peak width, wc, of 14.4 s. The retention time for aspartame, 1., was 250.5 s with a baseline peak width, w of 21.1 s. The retention time for the unretained solvent methanol was 40.4 s. Calculate the average plate height, H, in micrometers for this separation, given that it was performed on a 27.7...
4. The compounds in a mixture separated by GC can be identified by their retention times. If you Suructor nad not told you which peak in the GC chromatogram corresponded to which alker you didn't know the boiling points of the alkenes, how could you determine the identity or each peak by its retention time? Identities of the components in a mixture separated by GC can also be determined by the technique called "spiking". Suppose you had run a chromatogram...
12. (16 pts) A researcher performed a chromatographic separation of caffeine and aspartame using methanol as the mobile phase. The retention time for methanol was 20.05 The retention time for caffeine (t.) was found to be 215.2 s with a peak width (w.) of 11.5 s and the retention time for aspartame (t) was 276.8 s with a peak width (w.) of 21.8 s. A) Calculate the resolution (R) for this separation B) Calculate the retention factor (k) for aspartame.
2.0 EXAMPLEI : The following data were obtained for a separation using a 0.5 mm id, 10 meter open tubular column: Retention time (min) Peak base width (min) Methane Cyclohexane 8.0 0.65 Methylcyclohexane 8.17 0.72 Toluene 10.2 0.95 a)Draw the chromatogram and label the peaks b) Calculate the number of theoriticla plate for each compound (N) and palte height (H) c) Calculate the capacity factor for each compound d) the resolution between tow consequent peak R, e) Calculate the length...
EXERCISE 6: Two chemical species, A and B are separated by isothermal gas chromatography, using a 2.00 m column having 5000 theoretical plates at a flow rate of 15.0 ml / min. The peak of unabsorbed air appears after 30 s; the peak of A appears after 5 min and that of B after 12 min (a) Calculate the dead volume VM of the column, and the retention volumes Va and VB. (b) Calculate the reduced volumes V’a and V'B...
Table 2: Alcohol and Ketone Standards GC Retention Times GC#: Retention time Alcohol Standard Mixture Phent ion= 2.05Smin low Peak 1 Compound Name: athanol Rapesnal utanal aclapeatanal 4.755min oilng 6.895min .230 min Peak 2 Compound Name: Peak 3 Compound Name: Peak 4 Compound Name: GC#:1 Ketone Standard Mixture Retention time 2.575un Peak 1 Compound Name: Acclono Butanon a Pentanone 2tHex anon Peak 2 Compound Name: min Peak 3 Compound Name: 615 min 1D. 307 min Peak 4 Compound Name: Part...
Hand Calculations (40 %)-(must not exceed 2 pages) The process involves the separation of a binary mixture containing heptane and ethylbenzene using a countercurrently operated continuous fractionation unit. A feed at a flowrate of 252 mol/h containing 43 wt% heptane and 57 wt% ethyl benzene is to be fractionated at 1 bar to give a distillate with 95 mol% heptane and a bottom product with 95 m0196 ethyl benzene. The reflux ratio will be 70% more than the minimum. The...
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