Methylene bromide (CH2Br2) has a boiling point of 97 oC. Methylene chloride (CH2Cl2) has a boiling point of 40 oC. Regarding these two compounds, which one is expected to have the longer GC retention time?
Homework Answers
Methylene bromide is expected to have the longer GC retention time.
Since, boiling point of methylene bromide is high hence it is more polar and less time it spends in the gas phase. Thus, retention time is high because it will take longer time for the compound to be pushed by gas phase.
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Methylene bromide (CH2Br2) has a boiling point of 97 oC. Methylene chloride (CH2Cl2) has a boiling point of 40 oC. Regar...
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40-60ºC and the lower boiling point compounds travel through the
column faster than the higher boiling point compounds. 1-hexene
would have the second highest retention time with its boiling point
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i) Draw the FID spectrum for the original mixture (you will not
know the...
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looking for a check of my work, is this correct? if not please let me know....
looking for a check of my work, is this correct? if not please
let me know. thanks!
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The original mixture contains petroleum ether, 1-hexene,
and 1-bromohexane in a 1:1:1 ratio.
Petroleum ether has the lowest boiling point range of
40-60ºC and the lower boiling point compounds travel through the
column faster than the higher boiling point compounds. 1-hexene
would have the second highest retention time with its boiling point
of 63ºC and 1-bromohexane would have the lowest with a boiling
point of 143ºC.
i) Draw the FID spectrum for the original mixture (you will not
know the...
Question 4 (1 point) Saved Which of the following compounds has the lowest expected boiling point? HINT: Consider the amount of force required to induce a dipole. How does that relate to differences in electronegativity? CCl4 SICIA GeCl4 They all have the same expected boiling point Question 5 (1 point) Show Report e е
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Question 4 1 pts Which one of the following compounds has the highest boiling point? یہ لہلم والی Question 5 1 pts Which of the following is the strongest acid?
40. Predict from dimethyl ether or ethanol which has the higher boiling point. Explain. 41. Which of the following compounds would be more soluble in water? Explain. a. b. Hohlwollt odio dubota H3CC-CH3 H3C- H2 -C -CH
Which of the following compounds has the highest boiling point? 34.6°C 78.3°C 100°C 800 760 Normal boiling point 600 Vapor pressure (tor) Diethyl ether Water 400 Ethyl alcohol (ethanol) 200 Ethylene glycol 0 20 80 100 40 60 Temperature (°C) Select one: a. NH3 O b. H₂S о с. НСІ O d. H₂O According to the MO theory, which of the following molecules should not exist? Select one: a. Hez b. Hez c. H2 d. All of the above
Part A 1. If you had used more methylene chloride in each step, you could have extracted more caffeine. Explain why you did not. Hint - What step would have taken longer (Hint: not drying). PART A Mass of Beaker & Caffeine Mass of Beaker 167.750g 67.6809 Mass of Caffeine 0.0 75 Calculations. Show your work and circle the answers. Mass of caffeine recovered: 012919 b) Actual:.07 % caffeine recovered: a) Predicted: 9 7:213% b) Actual: 92.105% PART B Unknown...
Testbank, Question 018 Which one of the following compounds has the highest boiling point? o OH H 0 OH IV V ΟΙ O II III Ο IV OV
looking for a check of my work, is this correct? if not please
let me know. thanks!
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