>Unknown W was analyzed against four reference compounds using solvent system B: A summary of these results are provided in the table below:

Reference Compound (list alphabetically)	Rf Value (calculate from TLCs)	Present in Unknown? (yeso)
Acetaminophen	?	yes?
Caffeine	?	yes?
Ibuprofen	?	no?
Pseudoephedrine hydrochloride	?	no?

1. Name a possible OTC drug that matches the results of this experiment for your assigned unknown. Provide the name of the drug here.

2. How would you expect the R_f values of the reference compounds to change if your selected solvent system were diluted with an equal portion of hexanes? Explain your answer.

3. How would you expect the order of elution of the reference compounds to change if your selected solvent system were diluted with an equal portion of hexanes? Explain your answer.

4. How would you expect the order of elution of the reference compounds to change if the acidic/basic component of your selected solvent system was not present? Explain your answer.

WP SOLUB WA SOLUB W) SOLVB WC SOLVE W co c 13 1 w (o W co P W to A