Naphthalene is the two compounds would have the highest rf value on a silica gel tlc plate.
Which compound should have the highest Rf value on a TLC plate?
- Non-polar substances
- Polar chemicals move up the TLC plate slowly or not at all, whereas non-polar compounds move up the plate the fastest (greater Rf value).
- Naphthalene would be the substance that would move the farthest since it is the least polar molecule. This would be located at the top of the TLC plate and have the highest RF value.
- A high RF value indicates that the solute was drawn to the solvent. This is due to the fact that since their polarities are similar, the solute follows the solvent as it travels upward.
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