Why did the CAFF not travel as far up the TLC plate as the ASA and APHEN did in the ethanol and ethyl acetate solvent? Choose one of the following answers.
A) Caffeine is more able to form hydrogen bonds with the solvent than ASA or APHEN.
B) Caffeine is less able to form hydrogen bonds with the solvent than ASA or APHEN.
2. Why was minimal or no movement of the three compounds along the stationary phase observed when cyclohexane was used as the mobile phase? Choose one of the following answers.
A) Cyclohexane is a large molecule.
B) Cyclohexane forms extensive hydrogen bonds with solutes.
C) Cyclohexane cannot form hydrogen bonds with solutes.
D) Cyclohexane is very polar compared to the other mobile phase liquids tested.