1. You're trying to isolate menthone, an essential oil that smells like mint. You will use TLC to determine if the compound you obtain is menthone.

To carry out the TLC, you will need to create a 3:2 hexanes:ethyl acetate eluting solvent. If you want a final volume of 10 mL of solvent, what volumes of hexanes and ethyl acetate would you need to add?
A. 3 mL hexanes and 2 mL ethyl acetate
B. 4 mL ethyl acetate and 6 mL hexanes
C. 5 mL hexanes and 5 mL ethyl acetate
D. 6 mL ethyl acetate and 4 mL hexanes

2. Write out a procedure as a numbered list of the specific steps you should take for TLC, assuming you are given a standard for menthone. Be specific enough with your procedure that another student following it would be able to avoid mistakes. Include directions for creating an eluting solvent, preparing your chamber and plate, and how you would be able to tell whether your TLC experiment supports the claim that your compound is menthone. Use the eluting solvent mixture from Q1.

3. A student sets up their TLC as shown in the image below, but there is a problem with this setup.
*** The issue IS NOT a missing piece of filter paper! ***

a. Identify the problem and how this problem would affect the TLC plate after elution.
b. Use Chemix to diagram a corrected version. Make the spots yellow. Use a "tank" as the TLC chamber and an ellipse from the shapes menu as the lid.

4. Use Chemix to depict the appearance of your TLC plate if the isolated oil is menthone. The Rf value of your standard menthone is 0.5. Make your spots yellow. Make your TLC plate as short as possible in your depiction. Line up the ruler with the side of your TLC plate, with the first tick mark at the spotting location.