Question

1. (a) List the five eluents in order of increasing polarity.

ethyl acetate, hexane, methanol, dicholoromethane, and toluene

(b) With regard to your experimental results, briefly describe the effect of eluent polarity on the Rf of each stock solution mixture compound.

(c) In the Pre-Laborator Assigment, you listed biphenyl, benzhydrol, and benzophenone in order of increasing polarity. What conclusion can you draw about the effect of compound polarity on Rf in a chosen eluent? Briefly explain

Experiment Results:

benzhydrol rf= 1.2/3.7=0.32

benzophenone rf=2.1/3.7=0.57

biphenyl rf= 3.4/3.7= 0.92

Answer 1