medium · MCAT chem-phys
A lab technician uses thin-layer chromatography (TLC) to separate two compounds. Compound A is polar, and Compound B is nonpolar.
Using a silica gel plate (polar stationary phase) and a nonpolar solvent (mobile phase), which compound will travel further?
- Compound A, because polar compounds move fastest in nonpolar solvent.
- Compound B, because it interacts less with the stationary phase.
- Both move the same distance via capillary action alone.
- Neither compound will move at all, given that the solvent used is nonpolar.
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