Homework Help: Chemistry

Posted by Jordyn on Sunday, October 3, 2010 at 2:50pm.

Consider the following errors that could be made when running TLC. Indicate what should be done to correct the error.
a) a two-component mixture containing 1-octene and 1,4-dimethylbenzene gave only one spot with an Rf value of .95. The solvent uses was acetone.
b) a two-component mixture containing a dicarboxylic acid and tricarboxylic acid gave only one spot with an Rf value of .05. The solvent used was hexane.
c) when a TLC plate was developed, the solvent front ran off the top of the plate.

Chemistry - DrBob222, Sunday, October 3, 2010 at 3:19pm
a) use a less polar solvent.
b) use a more polar solvent
c) develop more quickly (less time to run the separation).

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