answer 1 1. If we wanted to increase the separation efficiency of the molecules in this experiment, should weincrease or decerease the length of our column? Explain your answer.2. How would our experimental results change if a less polar mobile phase was used such asbutanol instead of isopropyl alcohol?3. Suppose three molecules are in a sample: A, B, and C. If the sample was separated using thisexperimental procedure, what order would the compounds elute (from first to last)? Molecule Ais a nonpolar compound. Molecule C is a polar compound that also has hydrogen-bondingintermolecular forces. Molecule B is polar compound without any hydrogen bonding sites.4.The following molecules are separated using this experimental technique. List the molecules theorder in which they would elute (first being the first to come off the column, third last).MOLECULELEWIS STRUCTUREORDER OF ELUTIONH.H.CAcetoneH.HH.HCPentaneHH.HH.HH.H.Methylamine186 |EXPERIMENT 1386

Since the experiment has not been mentioned, thus column chromatography is being considered here.

Answered: 1. If we wanted to increase the…

1. If we wanted to increase the separation efficiency of the molecules in this experiment, should we increase or decrease the length of our column? Explain your anewer.

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

ChapterL3: Carbon (13c) Nmr Spectroscopy

Section: Chapter Questions

Problem 13CTQ

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Concept explainers

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.

Question

answer 1

1. If we wanted to increase the separation efficiency of the molecules in this experiment, should we
increase or decerease the length of our column? Explain your answer.
2. How would our experimental results change if a less polar mobile phase was used such as
butanol instead of isopropyl alcohol?
3. Suppose three molecules are in a sample: A, B, and C. If the sample was separated using this
experimental procedure, what order would the compounds elute (from first to last)? Molecule A
is a nonpolar compound. Molecule C is a polar compound that also has hydrogen-bonding
intermolecular forces. Molecule B is polar compound without any hydrogen bonding sites.
4.
The following molecules are separated using this experimental technique. List the molecules the
order in which they would elute (first being the first to come off the column, third last).
MOLECULE
LEWIS STRUCTURE
ORDER OF ELUTION
H.
H
.C
Acetone
H.
H
H.
H
C
Pentane
H
H.
H
H.
H
H.
H.
Methylamine
186 |EXPERIMENT 13
86

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