Question

In column chromatography, what acts as the stationary phase?

Options

• The solvent mixture only

• The vapour of the solvent

• The packed adsorbent in the column

• The mixture of solutes

Answer 1

The packed adsorbent in the column

Explanation: 

In column chromatography, a solid adsorbent such as alumina, silica, or Fuller's earth is packed in a long tube and serves as the stationary phase.