Question

A student made a mistake in the experiment and ended up with some unreacted 2-methylcyclohexanol in...

A student made a mistake in the experiment and ended up with some unreacted 2-methylcyclohexanol in their product. Where would you see this in the GC chromatogram? (Would it have a longer or shorter RT? Explain why).
Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Answer:             Longer RT (Retention Time)

Polar compounds will have a longer elution time on a polar column (i.e. the stationary phase) while a nonpolar compound will elute in shorter times. Polar compounds present in mobile phase (gas phase) passing through will be adsorbed (Surface phenomenon) on stationary phase compare to non-polar compounds. Hence we will observe a longer retention times for such compounds since stationary phase slowly releases polar compounds as they are attached temporarily to it.

Since you have not provided starting compound i cannot compare with 2-methylcyclohexanol it without knowing starting compound polarity.The various compounds in the sample will separate and result in the appearance of peaks at different locations on your chromatogram according to their molecular weight and its polarity.

Thank You! Please click on "Thumbs Up" icon to support me, if i have helped you.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A few basic gas chromatography questions: In general, how would you determine which of several peaks...
A few basic gas chromatography questions: In general, how would you determine which of several peaks in a chromatogram obtained for a mouthwash sample might correspond to ethanol? (Is your suggested method 100% reliable?) How would you use that peak to determine how much ethanol is present in the mouthwash? In general, will an increase in operating temperature cause a given peak to have a longer or a shorter retention time? Why? In general, will a decrease in mobile phase...
For each of the following situations during the density of water experiment, determine if the mistake...
For each of the following situations during the density of water experiment, determine if the mistake would give a falsely high or falsely low density for water. For each situation, assume everything else in the experiment is done correctly. Note: It may be helpful to try some hypothetical calculations. a. When weighing a volumetric flask full of water, a student does not notice that the outside of the flask is wet. ( Choose HIGH,LOW,or Unchanged). Explain Why? b. When weighing...
1) Explain why some substances move up the stationary pase in a chromatographic experiment faster than...
1) Explain why some substances move up the stationary pase in a chromatographic experiment faster than others. 2) Describe how the rate of movement of a substance in a chromatography experiment can be used to identify the substance.
A student sets up a double - slit experiment using mono- chromatic light of wavelength l....
A student sets up a double - slit experiment using mono- chromatic light of wavelength l. The distance between the slits is equal to 25l. (a) Find the angles at which the m 5 1, 2, and 3 maxima occur on the viewing screen. (b) At what angles do the first three dark fringes occur? (c) Why are the answers so evenly spaced? Is the spacing even for all orders? Explain.
For your post-lab questions: some of you made red-colored Co(salen), while others made brown-colored Co(salen). The...
For your post-lab questions: some of you made red-colored Co(salen), while others made brown-colored Co(salen). The difference is due to different amount of O2 incorporated into the reaction to make (salen)Co-O-O-Co(salen). The red compound has less O2 and usually forms when the temperature is higher. (1) Why you did not see the same phenomenon last week for the synthesis of Ni(salen)? (2) Why higher temperatures favor the product with less O2 incorporated? (3) Assuming you made pure (salen)Co-O-O-Co(salen), how would...
I recently did an experiment where I mixed 2.11 ml of water, 2.01 ml of ethyl...
I recently did an experiment where I mixed 2.11 ml of water, 2.01 ml of ethyl acetate and 0.059 g of vanillyn alcohol. When I did the theoretical mass calculation I got 0.0335g, but when I did the experiment and evaporated off the organic layer, I got 0.044g of product. Could someone please explain why I would have gotten more than what my theoretical mass would be? Could this have occurred from evaporating it too long or maybe during extraction,...
Imagine that you have set up a Kirby Bauer experiment on Mueller Hinton agar (non-selective agar)...
Imagine that you have set up a Kirby Bauer experiment on Mueller Hinton agar (non-selective agar) in order to test if Escherichia coli is susceptible or resistant to Drug X. After 24 hours, you notice a zone of inhibition (clear zone) around your antibiotic disc and determine that E. coli is susceptible to Drug X. You then take a cotton swab and subculture a sample from this zone of inhibition (where no growth was apparent) onto a new agar plate...
Henry Magruder made a mistake—he left a CD at the coffee station. Later, when Iris Majwubu...
Henry Magruder made a mistake—he left a CD at the coffee station. Later, when Iris Majwubu was topping off her mug with fresh tea, hoping to wrap up her work on the current SQL code module before it was time to go home, she saw the unlabeled CD on the counter. Being the helpful sort, she picked it up, intending to return it to the person who’d left it behind. Expecting to find perhaps the latest device drivers, or someone’s...
You are a directed studies student (undergraduate student conducting research in a lab for course credit)...
You are a directed studies student (undergraduate student conducting research in a lab for course credit) and your supervisor asks you to use a cryopreserved cell culture stock to determine where an enzyme is located in the cell and to measure its activity.   The cryopreserved yeast or E. coli cells have been genetically modified to express a synthetic enzyme. During the synthesis of this enzyme it is thought that the enzyme could be incorporated into different membranes within the cell....
Properties of water to test at home: Experiment 1 Materials needed – one paper clip and...
Properties of water to test at home: Experiment 1 Materials needed – one paper clip and a glass of water Procedure: place a paper clip (laying flat) on the surface of the water and observe. Observations: What happened when you placed the paper clip on the surface of the water? Procedure: Place the paper clip long ways (up and down) onto the surface of the water. Observations: What happened when you placed the paperclip long ways on the surface of...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT