3. During the liquid chromatography experiment we will be separating fluorene from fluorenone using a column packed using alumina and hexane. The mixture of fluorene and fluoreneone will be applied to the column using a 1:1 mixture of hexane and toluene. We will begin the separation using hexane as the solvent, and once the first compound has come off the column, we will switch to a mixture of hexane and acetone. a. Which compound do you expect to exit the column first, fluorene or fluorenone? b. Why do you think that the mixture was dissolved in a mixture of hexane and toluene instead of just dissolving it in hexane? c. Why do you think we add acetone to the solvent once the first compound has exited the column?

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
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3. During the liquid chromatography experiment
we will be separating fluorene from fluorenone
using a column packed using alumina and
hexane. The mixture of fluorene and
fluoreneone will be applied to the column using
a 1:1 mixture of hexane and toluene. We will
begin the separation using hexane as the
solvent, and once the first compound has come
off the column, we will switch to a mixture of
hexane and acetone.
a. Which compound do you expect to exit the
column first, fluorene or fluorenone?
b. Why do you think that the mixture was
dissolved in a mixture of hexane and toluene
instead of just dissolving it in hexane?
c. Why do you think we add acetone to the
solvent once the first compound has exited the
column?
Transcribed Image Text:3. During the liquid chromatography experiment we will be separating fluorene from fluorenone using a column packed using alumina and hexane. The mixture of fluorene and fluoreneone will be applied to the column using a 1:1 mixture of hexane and toluene. We will begin the separation using hexane as the solvent, and once the first compound has come off the column, we will switch to a mixture of hexane and acetone. a. Which compound do you expect to exit the column first, fluorene or fluorenone? b. Why do you think that the mixture was dissolved in a mixture of hexane and toluene instead of just dissolving it in hexane? c. Why do you think we add acetone to the solvent once the first compound has exited the column?
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