Principles of Instrumental Analysis
7th Edition
ISBN: 9781337468039
Author: Skoog
Publisher: Cengage
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Chapter 28, Problem 28.9QAP
Interpretation Introduction
Interpretation:
The similarities between the normal-phase partition chromatography and adsorption chromatography are to be stated.
Concept introduction:
The chromatography is the method of separation of the mixtures of the substances in their compounds. There are various forms of chromatography and all works on the same principle. The mobile phase of the compounds flows through the stationary phase of the compounds and carries the mixture of components along with it.
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Draw the anti-Markovnikov product of the hydration of this alkene.
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Note for advanced students: draw only one product, and don't worry about showing any stereochemistry. Drawing dash and wedge bonds has been disabled for
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Explanation
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AG/F-2° V
3. Before proceeding with this problem you may want to glance at p. 466 of your textbook
where various oxo-phosphorus derivatives and their oxidation states are summarized.
Shown below are Latimer diagrams for phosphorus at pH values at 0 and 14:
-0.93
+0.38
-0.50
-0.51 -0.06
H3PO4 →H4P206 →H3PO3 →→H3PO₂ → P → PH3
Acidic solution
Basic solution
-0.28
-0.50
3--1.12
-1.57
-2.05 -0.89
PO HPO H₂PO₂ →P → PH3
-1.73
a) Under acidic conditions, H3PO4 can be reduced into H3PO3 directly (-0.28V), or via the
formation and reduction of H4P206 (-0.93/+0.38V). Calculate the values of AG's for both
processes; comment.
(3 points)
0.5
PH
P
0.0
-0.5
-1.0-
-1.5-
-2.0
H.PO,
-2.3+
-3 -2
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b) Frost diagram for phosphorus under acidic
conditions is shown. Identify possible
disproportionation and comproportionation processes;
write out chemical equations describing them. (2 points)
H,PO
4
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Oxidation stale, N
Chapter 28 Solutions
Principles of Instrumental Analysis
Ch. 28 - Prob. 28.1QAPCh. 28 - Prob. 28.2QAPCh. 28 - Prob. 28.3QAPCh. 28 - How can the selectivity factor be manipulated in...Ch. 28 - Prob. 28.5QAPCh. 28 - Prob. 28.6QAPCh. 28 - Prob. 28.7QAPCh. 28 - Prob. 28.8QAPCh. 28 - Prob. 28.9QAPCh. 28 - Prob. 28.10QAP
Ch. 28 - Prob. 28.11QAPCh. 28 - Prob. 28.12QAPCh. 28 - Prob. 28.13QAPCh. 28 - Prob. 28.14QAPCh. 28 - Prob. 28.15QAPCh. 28 - Prob. 28.16QAPCh. 28 - Mass spectrometry is an extremely versatile...Ch. 28 - Prob. 28.18QAPCh. 28 - Prob. 28.19QAPCh. 28 - Two components in an HPLC separation have...Ch. 28 - Prob. 28.21QAPCh. 28 - Prob. 28.22QAPCh. 28 - Prob. 28.23QAP
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