Question

column chromatography: (-)-carvone, (+)-limonene and (-)-dihydrocarveol

In what order to you expect to collect the components from the column? Explain.

Answer 1

(-)-carvone has ketone as a functional group

(+)-limonene has alkene as a functional group

(-)-dihydrocarveol has alcohol as a functional group

The polarity order of functional groups is alcohol > ketone > alkene

therefore, the order of elution from the column will be from non-polar to polar and hence, the order of elution of the following components will be

(+)-limonene elutes first followed by (-)-carvone and lastly (-)-dihydrocarveol elutes from the column