Question

1.  

a. Draw the structure of fluorene and fluorenone  

b. Then write a statement as to which compound is more polar.  

Example: Based on the fact that Compound 1 has more Cl groups and fewer carbons than Compound 2 it should be more polar.

2. The material (solid phase) of the TLC plate is a silica gel is a polymer of SiO2 units.

a. What intermolecular forces does the silica gel participate in?  

b. What three functional groups would be attracted to it?   

c. Would you expect the solid phase to be attracted to our two compounds, why?  

3. In the second half of the lab we will be comparing analgesic tablets. Write the active ingredients for the following tablets: Tylenol, Advil, Excedrin, and Midol.  

b. For the active ingredients write the ingredients from most polar to least polar.  

Answer 1

Solution:

A) The structure of fluorene and fluorenone are given in attached sheet.

B) The fluorenone (C13H8O) is more polar than fluorene (C13H10) due to presence of lesser number of hydrogen and presence of carbonyl oxygen. The carbonyl oxygen increases the polarity due to its higher electronegativity than carbon.