If you had a mixture of naphthalene and benzaldehyde that you separated using silica gel column chromatography, which compound would come off the column first

Naphthalene

Explanation:

The compound that would come off the column first when a mixture of naphthalene and benzaldehyde is separated using  Silica gel is ;  naphthalene

This is because naphthalene is a Non-polar compound while Benzaldehyde has a polar covalent bond in it ( C = O ). silica gel been a polar absorbent makes it possible for the compound with more polar bond to be retained longer than a compound that is Non-polar