Chemca Chemistry Made Easy
Column Chromatography Simulation
Concept Quiz
Chromatography & Elution
Column chromatography purifies bulk chemical mixtures. A glass column is packed with a Stationary Phase (polar silica gel). The mixture is loaded on top, and a liquid Mobile Phase (solvent) is continuously poured through.
$$ \text{Retention Volume } (V_R) = \text{Volume required to elute a compound} $$
Separation Mechanism:
Compounds that strongly interact with the polar silica (Highly Polar compounds) travel very slowly through the column. Non-polar compounds are poorly retained and are swept out (eluted) first. Changing the solvent polarity can dramatically speed up or slow down this process.
Compounds that strongly interact with the polar silica (Highly Polar compounds) travel very slowly through the column. Non-polar compounds are poorly retained and are swept out (eluted) first. Changing the solvent polarity can dramatically speed up or slow down this process.
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