Why does the Toluene elute before Mesitylene on the GC. These are the results of the...
Homework Answers
Solution:
Both toluene and mesitylene are nonpolar in nature. Thus, they elute accordiing to their boiling points.
A lower boiling point liquid eluted first in gas chromatography. Since, molar mass of toluene is lower than mesitylene and therefore posses low boiling point, hence it eluted earlier than mesitylene.
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Why
does the Toluene elute before Mesitylene on the GC. These are the
results of the...
Which one would elute first on GC (gas Chromatography, hexane or toluene? why?
Which one would elute first on GC (gas Chromatography, hexane or toluene? why?
can I have help on question 5 please? Chemistry 70A Experiment 5 - Distillation Fall 2019...
can I have help on question 5 please?
Chemistry 70A Experiment 5 - Distillation Fall 2019 5. (4 pts) For gas chromatography, what four factors determine the retention time for organic compounds moving through the column?! 6. (2 pts) Cyclohexane was the first compound to "elute" from the the gc column. Suggest some reasons why cyclohexane elutes before toluene.
Post Lab Questions: CI MALACHITE GREEN CRYSTAL VIOLET 1. Why does the malachite green dye elute...
Post Lab Questions: CI MALACHITE GREEN CRYSTAL VIOLET 1. Why does the malachite green dye elute first? What physical properties does it have that affect it's interaction with alumina and how are those different from crystal violet? 2. Write the reaction of crystal violet with 1 equivalent of HC. 3. Why does adding HCI cause crystal violet to elute more quickly? What changes with it's physical properties and how does that property affect it's interaction with alumina?
Why does cyclohexane have a lower boiling point than toluene?
Why does cyclohexane have a lower boiling point than toluene?
Why does 40% cyclohexane, 60% toluene have a different boinling point than 60% cyclohexane and 40%...
Why does 40% cyclohexane, 60% toluene have a different boinling point than 60% cyclohexane and 40% toluene?
based on the compounds structure why does toluene (bp 111 C) have a higher boiling point...
based on the compounds structure why does toluene (bp 111 C) have a higher boiling point then ethyl acetate (bp: 77.1)
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...
There is a positive correlation between GC content and melting temperature. Does this imply that organisms...
There is a positive correlation between GC content and melting temperature. Does this imply that organisms with DNA that has low GC content can not survive in extreme temperatures? please list references to support your answer 30 marks(Please answer in essay form)
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...
GC of sodium methoxide reaction products: A = 32745 A=15044 A = 9339 A=area GC of...
GC of sodium methoxide reaction products: A = 32745 A=15044 A = 9339 A=area GC of potassium tert-butoxide reaction products: A = 10318 14- 22359 B4 = 3478 Minutes (Span Lab Report Form: E2 Reaction of 2-Bromoheptane Before Lab complete the first two columns of the Results table below. drawing the alkene products in order of increasing boiling point (lowest boiling point at top of table). Provide structures and names in the first column Results Perform calculations for the relative...
can I have help on question 5 please?
Chemistry 70A Experiment 5 - Distillation Fall 2019 5. (4 pts) For gas chromatography, what four factors determine the retention time for organic compounds moving through the column?! 6. (2 pts) Cyclohexane was the first compound to "elute" from the the gc column. Suggest some reasons why cyclohexane elutes before toluene.
Post Lab Questions: CI MALACHITE GREEN CRYSTAL VIOLET 1. Why does the malachite green dye elute first? What physical properties does it have that affect it's interaction with alumina and how are those different from crystal violet? 2. Write the reaction of crystal violet with 1 equivalent of HC. 3. Why does adding HCI cause crystal violet to elute more quickly? What changes with it's physical properties and how does that property affect it's interaction with alumina?
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...
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...
GC of sodium methoxide reaction products: A = 32745 A=15044 A = 9339 A=area GC of potassium tert-butoxide reaction products: A = 10318 14- 22359 B4 = 3478 Minutes (Span Lab Report Form: E2 Reaction of 2-Bromoheptane Before Lab complete the first two columns of the Results table below. drawing the alkene products in order of increasing boiling point (lowest boiling point at top of table). Provide structures and names in the first column Results Perform calculations for the relative...
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