Principles of Instrumental Analysis, 6th Edition
6th Edition
ISBN: 9788131525579
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cenage Learning
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Chapter 15, Problem 15.13QAP
Interpretation Introduction
Interpretation:
The part of the molecule that behaves as the chromophore and fluorescent centre should be determined.
Concept introduction:
The chemical compound obtained from the bark of the cinchona tree is called Quinine. The molecule that is most likely to behave as the chromophore and fluorescent centre.Chromophore is a group of molecule or chromophore is an atom which shows the colour of a compound.
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13C NMR is good for:
a) determining the molecular weight of
the compound
b) identifying certain functional groups.
c) determining the carbon skeleton, for
example methyl vs ethyl vs propyl groups
d) determining how many different kinds
of carbon are in the molecule
6
D
2. (1 pt) Limonene can be isolated by performing steam distillation of orange peel.
Could you have performed this experiment using hexane instead of water? Explain.
3. (2 pts) Using GCMS results, analyze and discuss the purity of the Limonene obtained
from the steam distillation of orange peel.
Part III. Arrange the following carbons (in blue) in order of increasing chemical shift.
HO
B
NH 2
A
CI
Chapter 15 Solutions
Principles of Instrumental Analysis, 6th Edition
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