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- Apr 20, 2008
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What is the effect of changing what the compounds are eluted with? Does that mean the solvent?
The question is compound x has a Rf of 0.7 in a 20% ethyl acetate + hexane elute. If elute is now 100% hexane, what will the new Rf be? Above 0.7, 0.7 or greater than 0.7?
The answer is lower. Is it b/c more nonpolar solvent won't travel as fast up the plate regardless of how polar/nonpolar the solute is?
The question is compound x has a Rf of 0.7 in a 20% ethyl acetate + hexane elute. If elute is now 100% hexane, what will the new Rf be? Above 0.7, 0.7 or greater than 0.7?
The answer is lower. Is it b/c more nonpolar solvent won't travel as fast up the plate regardless of how polar/nonpolar the solute is?