Principles of Instrumental Analysis
7th Edition
ISBN: 9781337468039
Author: Skoog
Publisher: Cengage
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Chapter 34, Problem 34.14QAP
Interpretation Introduction
Interpretation:
When
Concept introduction:
Centrifugation is based on the partition of particles by sedimentation. The pace of division in a suspension of particles principally relies upon the molecule density and size.
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Students have asked these similar questions
Here are the energies (in kcal/mol) for staggered and eclipsed interactions
for CH, CC, and CBr bonds
eclipsed (0°) staggered (60°)
bonds
CH/CH
1.0
0.0
CH/CC
1.3
0.0
Br:
CC/CC
3.0
0.9
Br
CH/CBr
1.8
0.0
CC / CBr
3.3
1.0
CBr / CBr
3.7
1.2
a) I've drawn the Newman projection for one of the staggered conformations of the molecule
above, looking down the C2-C3 bond. Draw Newman projections for the other two staggered
and the three eclipsed conformations (in order).
CH₂
H3C.
H'
H
Br
b) Calculate the relative energies for each of the conformations and write them below each
conformation.
90. Draw the stereoisomers obtained from each of the following reactions:
a.
H₂
b.
H₂
C.
H₂
Pd/C
Pd/C
Pd/C
36. The emission spectrum below for a one-electron (hydrogen-like) species in the gas
phase shows all the lines, before they merge together, resulting from transitions to the
first excited state from higher energy states. Line A has a wavelength of 434 nm.
BA
Increasing wavelength, λ
(a) What are the upper and lower principal quantum numbers corresponding to the lines
labeled A and B? (b) Identify the one-electron species that exhibits the spectrum.
Chapter 34 Solutions
Principles of Instrumental Analysis
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