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A solvent passes through a chromatography column in 2.18 min, but the solute requires 8.45 min....
A solvent passes through a chromatography column in 2.85 min, but the solute requires 9.43 min....
A solvent passes through a chromatography column in 2.85 min, but the solute requires 9.43 min. What is the retention factor, k?k= What fraction of the time does the solute spend in the mobile phase in the column? tfraction in mobile phase= The volume of the stationary phase is 0.115 times the volume of the mobile phase in the column (Vs=0.115Vm). What is the partition coefficient, K, for this system? K=
A solvent passes through a chromatography column in 3.41 min, but the solute requires 9.13 min. What is the retenti...
A solvent passes through a chromatography column in 3.41 min, but the solute requires 9.13 min. What is the retention factor, k? k= What fraction of the time does the solute spend in the mobile phase in the column? fraction in mobile phase The volume of the stationary phase is 0.101 times the volume of the mobile phase in the column (V = 0.101V.). What is the partition coefficient, K, for this system?
An open tubular column with a diameter of 193 um and a stationary phase thickness on...
An open tubular column with a diameter of 193 um and a stationary phase thickness on the inner wall of 0.60 um passes unretained solute through in 57 s. A particular solute has a retention time of 485 s. What is the partition coefficient for this solute? K= What fraction of time does this solute spend in the stationary phase?
An open tubular column with a diameter of 187 um and a stationary phase thickness on...
An open tubular column with a diameter of 187 um and a stationary phase thickness on the inner wall of 0.88 um passes unretained solute through in 79 s. A particular solute has a retention time of 471 s (b) What fraction of time does this solute spend in the stationary phase? (a) What is the partition coefficient for this solute? Number Number 259.8 4.96 K= total
A drug is analyzed by liquid chromatography using a column containing 1.27 mL of mobile phase...
A drug is analyzed by liquid chromatography using a column containing 1.27 mL of mobile phase and 1.66 mL of stationary phase. The retention time for an unretained com pound is 2.54 min and the retention time of the drug is 15.24 min. Calculate the partition coefficient for the drug.
The flow rate was 1.00 mL/min and the column mobile phase volume was 1.80 mL. The...
The flow rate was 1.00 mL/min and the column mobile phase volume was 1.80 mL. The stationary phase volume was 0.140 mL. For the compound with the peak at 2.75 min, what was the partition coefficient between the gas phase and the stationary phase at 150 degree C.
Q. A) An open tubular column is 30 m long and has an inner diameter of...
Q. A) An open tubular column is 30 m long and has an inner diameter of 0.500 mm. It is coated on the inside wall with a layer of stationary phase which is 30 um thick. Unretained solute passed through in 2.00 min whereas a particular solute has a retention time of 15.20 min. What is the volume flow rate in mL/min. B) Calculate the capacity factor for the solute. C) What was the fraction of time spent in the...
3. A capillary column for use in gas chromatography is 30.0 m long and has an...
3. A capillary column for use in gas chromatography is 30.0 m long and has an internal diameter of 0.320 mm. The inside wall of the capillary is coated with the stationary phase. a. The phase ratio (B) is the ratio of the mobile phase volume to the stationary phase volume: B = Vm/Vs. For a particular separation, the desired phase ratio is B = 200. What should the thickness of the stationary phase be to obtain this phase ratio?...
need help with number 2 HW #3 for Chem 318 Due: April 29, 2019 1. Solute A has a K 2.5 for an extraction between water (phase 1) and chloroform (phase 2). If 100 mL of a 0.01 fraction will be extr...
need help with number 2
HW #3 for Chem 318 Due: April 29, 2019 1. Solute A has a K 2.5 for an extraction between water (phase 1) and chloroform (phase 2). If 100 mL of a 0.01 fraction will be extracted? For the same solute and, what fraction will be extracted if 5 extractions wi 80 mL chloroform each are used (instead of one 400 ml extraction)? M solution containing solute A in water is extracted one time with...
A GC column is operated under the following conditions: Column: 1.10 m x 2 mm packed...
A GC column is operated under the following conditions: Column: 1.10 m x 2 mm packed with Chromosorb P and Carbowax 20M as stationary phase. The following retention times were obtained: air: 18.0 sec; methylacetate: 2.98 min; methyl propionate: 4.56 min. Peak width at half height: methylacetate: 7.7 sec; methyl propionate: 12.4 sec. Calculate: a) the corrected retention time for each solute. b) the capacity factor k' for each solute. c) the selectivity factor α for the pair of solutes....
A solvent passes through a chromatography column in 3.41 min, but the solute requires 9.13 min. What is the retention factor, k? k= What fraction of the time does the solute spend in the mobile phase in the column? fraction in mobile phase The volume of the stationary phase is 0.101 times the volume of the mobile phase in the column (V = 0.101V.). What is the partition coefficient, K, for this system?
An open tubular column with a diameter of 193 um and a stationary phase thickness on the inner wall of 0.60 um passes unretained solute through in 57 s. A particular solute has a retention time of 485 s. What is the partition coefficient for this solute? K= What fraction of time does this solute spend in the stationary phase?
An open tubular column with a diameter of 187 um and a stationary phase thickness on the inner wall of 0.88 um passes unretained solute through in 79 s. A particular solute has a retention time of 471 s (b) What fraction of time does this solute spend in the stationary phase? (a) What is the partition coefficient for this solute? Number Number 259.8 4.96 K= total
A drug is analyzed by liquid chromatography using a column containing 1.27 mL of mobile phase and 1.66 mL of stationary phase. The retention time for an unretained com pound is 2.54 min and the retention time of the drug is 15.24 min. Calculate the partition coefficient for the drug.
3. A capillary column for use in gas chromatography is 30.0 m long and has an internal diameter of 0.320 mm. The inside wall of the capillary is coated with the stationary phase. a. The phase ratio (B) is the ratio of the mobile phase volume to the stationary phase volume: B = Vm/Vs. For a particular separation, the desired phase ratio is B = 200. What should the thickness of the stationary phase be to obtain this phase ratio?...
need help with number 2
HW #3 for Chem 318 Due: April 29, 2019 1. Solute A has a K 2.5 for an extraction between water (phase 1) and chloroform (phase 2). If 100 mL of a 0.01 fraction will be extracted? For the same solute and, what fraction will be extracted if 5 extractions wi 80 mL chloroform each are used (instead of one 400 ml extraction)? M solution containing solute A in water is extracted one time with...
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