Question

A TLC of an organic solid (acetyl salicylic acid, aspirin) was run in 4 different eluents. Using your knowledge of TLC and polarity of these eluents, match the Rf of the aspirin to the eluent. 0.01 [Choose) 100% ethanol 90% hexanes, 10% ethanol 60% hexanes, 40% ethanol 100% hexanes 0.23 0.48 [Choose) 0.91 [Choose]

Answer 1

Q5; 100% Hexanes, Rf will be equal to 0.01

90% Hexanes 10% ethanol, Rf will be equal to 0.23

60% Hexanes 40% ethanol,, Rf will be equal to 0.48

100%ethanol,Rf will be equal to 0.91

Q6;

Glasswool : Plugs opening at teh bottom of column

Eluent and adsorbent: Helps seperate the mixture based on polarity of compounds in the mixture

Bottom layer of sand: provides level support for the column of adsorbent

Top layes of Sand : Helps keep the top of column level and intact