PRINCIPLES OF INSTRUMENTAL ANALYSIS
7th Edition
ISBN: 9789353506193
Author: Skoog
Publisher: CENGAGE L
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Chapter 31, Problem 31.10QAP
Interpretation Introduction
Interpretation:
The cause of glass transition for
Concept introduction:
The glass transition is also known as glass−liquid transition an associated with the process in which glass is converted into a liquid state. Vitrification is a reverse process to glass−liquid transition.
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Part IV. Propose a plausible Structure w/ the following descriptions:
a) A 5-carbon hydrocarbon w/ a single peak in its proton decoupled
the DEPT-135 Spectrum shows a negative peak
C-NMR spectrum where
b) what cyclohexane dione isomer gives the largest no. Of 13C NMR signals?
c) C5H120 (5-carbon alcohol) w/ most deshielded carbon absent in any of its DEPT Spectiva
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.
Chapter 31 Solutions
PRINCIPLES OF INSTRUMENTAL ANALYSIS
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