February 23, 2017

Homework Help: Concentration increase

Posted by Sheryl on Sunday, October 22, 2006 at 2:42pm.

Question: What would happen to the Rf values of the pigments if you were to increase the relative concntration of acetone in the developing solvent?
Note: The development solvent used was 70% hexane - 30% acetone.

My answer: Acetone is more polar than hexane so the increase in its concentration would move the spots more rapidly up the plate and therefore would increase all Rf values.

Please check this.


That sounds ok to me but I'm a novice at TLC.

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