Elution order is based on the polarities of the compounds. Remember the saying \"like dissolves like\" when thinking about theanswer. The mobile phase starts out very non-polar usinghexanes; so the compound that will elute first is the mostnon-polar compound. The compound that is more polar than oneof the other compounds but not as polar as the third compound willelute second, and the most polar compound will elute third. Adding dichloromethane speeds up the elution of the more polarcompounds. Naphthalene is the most non-polar compound due tothe fact that it only has carbons and hydrogens. Fluorenol ismostly carbons and hydrogens, but it contains a hydroxy groupmaking it a little more polar than naphthalene. o-Toluic acidcontains a carboxylic acid group making it the most polar compoundof the three. So, the elution order for these three compoundsis: naphthalene, then fluorenol, and then o-toluic acid. Solution Elution order is based on the polarities of the compounds. Remember the saying \"like dissolves like\" when thinking about theanswer. The mobile phase starts out very non-polar usinghexanes; so the compound that will elute first is the mostnon-polar compound. The compound that is more polar than oneof the other compounds but not as polar as the third compound willelute second, and the most polar compound will elute third. Adding dichloromethane speeds up the elution of the more polarcompounds. Naphthalene is the most non-polar compound due tothe fact that it only has carbons and hydrogens. Fluorenol ismostly carbons and hydrogens, but it contains a hydroxy groupmaking it a little more polar than naphthalene. o-Toluic acidcontains a carboxylic acid group making it the most polar compoundof the three. So, the elution order for these three compoundsis: naphthalene, then fluorenol, and then o-toluic acid..

1. Elution order is based on the polarities of the compounds. Remember the saying
"like dissolves like" when thinking about theanswer. The mobile phase starts out very non-polar
usinghexanes; so the compound that will elute first is the mostnon-polar compound. The
compound that is more polar than oneof the other compounds but not as polar as the third
compound willelute second, and the most polar compound will elute third. Adding
dichloromethane speeds up the elution of the more polarcompounds. Naphthalene is the most
non-polar compound due tothe fact that it only has carbons and hydrogens. Fluorenol ismostly
carbons and hydrogens, but it contains a hydroxy groupmaking it a little more polar than
naphthalene. o-Toluic acidcontains a carboxylic acid group making it the most polar
compoundof the three. So, the elution order for these three compoundsis: naphthalene, then
fluorenol, and then o-toluic acid.
Solution
Elution order is based on the polarities of the compounds. Remember the saying
"like dissolves like" when thinking about theanswer. The mobile phase starts out very non-polar
usinghexanes; so the compound that will elute first is the mostnon-polar compound. The
compound that is more polar than oneof the other compounds but not as polar as the third
compound willelute second, and the most polar compound will elute third. Adding
dichloromethane speeds up the elution of the more polarcompounds. Naphthalene is the most
non-polar compound due tothe fact that it only has carbons and hydrogens. Fluorenol ismostly
carbons and hydrogens, but it contains a hydroxy groupmaking it a little more polar than
naphthalene. o-Toluic acidcontains a carboxylic acid group making it the most polar
compoundof the three. So, the elution order for these three compoundsis: naphthalene, then
fluorenol, and then o-toluic acid.