You have obtained a gas chromatogram of a two component mixture of compounds A and B....
You have obtained a gas chromatogram of a two component mixture of compounds A and B. The height of peak A is 3.42 cm. and the width at half height is 1.98 cm. The height of peak B is 3.58 cm. and the width at half height is 1.66 cm. The percentage of a component in the mixture is proportional to peak area. Estimate peak areas by multiplying height by width at half height. What was the percentage of compound B in the mixture? (Enter your answer as a number without any percent symbol or the word percent.)
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You have obtained a gas chromatogram of a two component mixture
of compounds A and B....
1. The height of three peaks; A, B, and C obtained in a gas chromatogram are...
1. The height of three peaks; A, B, and C obtained in a gas chromatogram are 27.7 mm, 19.2 mm and 41.0 mm. The width of the peaks, at half height, are 4.9 mm, 4.7 mm and 4.6 mm, respectively. Calculate the percentage composition of C in the sample. Answer in : % 2. A gas chromatograph can be used to (more than one answer may be correct) -determine the mass of a compound. -determine the percentage composition of a...
1. The height of three peaks; A, B, and C obtained in a gas chromatogram are 27.7 mm, 19.2 mm and 41.0 mm. The width of...
1. The height of three peaks; A, B, and C obtained in a gas chromatogram are 27.7 mm, 19.2 mm and 41.0 mm. The width of the peaks, at half height, are 4.9 mm, 4.7 mm and 4.6 mm, respectively. 2.The optical purity of (+)-glucose in a mixture of (+) and (-)-glucose is 72%. What is the percentage of (+)-glucose in the sample? 3.Calculate the specific rotation, [α], if the observed rotation is -24°, the concentration is 0.4 g/mL, and...
5. Using the GC mentioned in question 4 and the values listed on the chromatogram for...
5. Using the GC mentioned in question 4 and the values listed on the chromatogram for the height and width (at half height) of each peak, calculate the percent composition for each product (A, B and C). Be sure to show your work. (8 points) 6. The products corresponding to each peak on the GC are the ortho, meta, and para isomers of the nitrated product shown in the scheme for reaction 1. These isomers were isolated, and a proton...
1.Calculate the specific rotation, [α], if the observed rotation is -24°, the concentration is 31 g/100...
1.Calculate the specific rotation, [α], if the observed rotation is -24°, the concentration is 31 g/100 mL, and the cell length is 5 cm. Answer in :° mL/g/dm 2. The height of three peaks; A, B, and C obtained in a gas chromatogram are 27.7 mm, 19.2 mm and 41.0 mm. The width of the peaks, at half height, are 4.9 mm, 4.7 mm and 4.6 mm, respectively. Calculate the percentage composition of C in the sample. Answer in :...
c) Using your answers to question 5 and 6a, what percent of the mixture obtained in...
c) Using your answers to question 5 and 6a, what percent of the
mixture obtained in reaction 1 is the ortho isomer?
d) What percent of the mixture obtained in reaction 1 is the
meta isomer?
e) What percent of the mixture obtained in reaction 1 is the
para isomer?
f) Could we have used Mass Spectrometry after the GC analysis
(GC-MS) to identify which peak on the GC was which isomer? Why or
why not?
g) Could we have...
Chromatograms of compounds A and B were obtained at the same flowrate with two columns of...
Chromatograms of compounds A and B were obtained at the same
flowrate with two columns of equal length. The Value of tm is 1.3
min in both cases.
Chromatograms
of compounds A and B were obtained at the same flow rate with two
columns of equal length. The value of
tm is
1.3 min in both cases.
I Column 1 Column 2 12 10 Time What is the numcrical valac of the nenn factor of pak A what isthemererkal valse...
NEED HELP WITH B) C) D) E) F) and G) that apply to the spectra below....
NEED HELP WITH B) C) D) E) F) and G) that apply to the
spectra below.
OTHER ANSWERS ARE THERE TO SUPPLEMENT
Thank you!
5. Using the GC mentioned in question 4 and the values listed on
the chromatogram for the height and width (at half height) of each
peak, calculate the percent composition for each product (A, B and
C). Be sure to show your work.
Area of peak A = 125 x 8 =
1000mm2
Area of peak...
B. (3 pts) The equilibrium vapor pressure (Pº) of ethyl acetate (MW = 88.11 g/mol) and...
B. (3 pts) The equilibrium vapor pressure (Pº) of ethyl acetate (MW = 88.11 g/mol) and butyl acetate (MW = 116.16 g/mol) at 25 °C are 121 Torr and 30.5 Torr, respectively. Determine the molar percent composition (mol %) of each component in the vapor above an ideal liquid solution containing 6.00 g of ethyl acetate and 18.0 g of butyl acetate. c. (3 pts) A mixture of methyl propanoate (1), 3-methoxy-1-propanol (2) and butyric acid (3) were detected in...
5. Would a liquid with high vapor pressure be more likely to be in liquid stationary...
5. Would a liquid with high vapor pressure be more likely to be in liquid stationary phase or gas phase? Why? likely to be 6. When analyzing a GC spectra, you must mark a) your (b) height, and width at (e GC trace. Show your calculations either in your final report or (d) and width at (c), on the sample GC spectra below. Report the retention time of each peak (in minutes), the identity of each component in the mixture,...
2. If two different compounds have the same Rr value, how might they be identified using paper chromatography?...
2. If two different compounds have the same Rr value, how might they be identified using paper chromatography? 3. Why is it important to keep the spots on the paper as small as possible? 4. If the solvent pool at the bottom of the beaker touched the spots on the 1.5cm line, what would happen to the spots? How would you address this error? 5. If you were teaching a student how to do paper chromatography, what three pieces of...
5. Using the GC mentioned in question 4 and the values listed on the chromatogram for the height and width (at half height) of each peak, calculate the percent composition for each product (A, B and C). Be sure to show your work. (8 points) 6. The products corresponding to each peak on the GC are the ortho, meta, and para isomers of the nitrated product shown in the scheme for reaction 1. These isomers were isolated, and a proton...
c) Using your answers to question 5 and 6a, what percent of the
mixture obtained in reaction 1 is the ortho isomer?
d) What percent of the mixture obtained in reaction 1 is the
meta isomer?
e) What percent of the mixture obtained in reaction 1 is the
para isomer?
f) Could we have used Mass Spectrometry after the GC analysis
(GC-MS) to identify which peak on the GC was which isomer? Why or
why not?
g) Could we have...
Chromatograms of compounds A and B were obtained at the same
flowrate with two columns of equal length. The Value of tm is 1.3
min in both cases.
Chromatograms
of compounds A and B were obtained at the same flow rate with two
columns of equal length. The value of
tm is
1.3 min in both cases.
I Column 1 Column 2 12 10 Time What is the numcrical valac of the nenn factor of pak A what isthemererkal valse...
NEED HELP WITH B) C) D) E) F) and G) that apply to the
spectra below.
OTHER ANSWERS ARE THERE TO SUPPLEMENT
Thank you!
5. Using the GC mentioned in question 4 and the values listed on
the chromatogram for the height and width (at half height) of each
peak, calculate the percent composition for each product (A, B and
C). Be sure to show your work.
Area of peak A = 125 x 8 =
1000mm2
Area of peak...
B. (3 pts) The equilibrium vapor pressure (Pº) of ethyl acetate (MW = 88.11 g/mol) and butyl acetate (MW = 116.16 g/mol) at 25 °C are 121 Torr and 30.5 Torr, respectively. Determine the molar percent composition (mol %) of each component in the vapor above an ideal liquid solution containing 6.00 g of ethyl acetate and 18.0 g of butyl acetate. c. (3 pts) A mixture of methyl propanoate (1), 3-methoxy-1-propanol (2) and butyric acid (3) were detected in...
5. Would a liquid with high vapor pressure be more likely to be in liquid stationary phase or gas phase? Why? likely to be 6. When analyzing a GC spectra, you must mark a) your (b) height, and width at (e GC trace. Show your calculations either in your final report or (d) and width at (c), on the sample GC spectra below. Report the retention time of each peak (in minutes), the identity of each component in the mixture,...
2. If two different compounds have the same Rr value, how might they be identified using paper chromatography? 3. Why is it important to keep the spots on the paper as small as possible? 4. If the solvent pool at the bottom of the beaker touched the spots on the 1.5cm line, what would happen to the spots? How would you address this error? 5. If you were teaching a student how to do paper chromatography, what three pieces of...
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