Chemistry: Principles and Practice
3rd Edition
ISBN: 9780534420123
Author: Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher: Cengage Learning
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Chapter 2, Problem 2.48QE
(a)
Interpretation Introduction
Interpretation:
(b)
Interpretation Introduction
Interpretation:
Symbol for each
Concept Introduction:
Each and every element present in the Periodic table has a unique name. Some of the elements are named considering their
Chemical names are represented as atomic symbols. In the symbols, the mass number and atomic number are shown. The complete
Atomic number is the total number of protons present in the atom of an element. Mass number is the total number of protons and neutrons present in nucleus of an atom.
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(a
4 shows scanning electron microscope (SEM) images of extruded
actions of packing bed for two capillary columns of different diameters,
al 750 (bottom image) and b) 30-μm-i.d. Both columns are packed with the
same stationary phase, spherical particles with 1-um diameter.
A) When the columns were prepared, the figure shows that the column with
the larger diameter has more packing irregularities. Explain this observation.
B) Predict what affect this should have on band broadening and discuss your
prediction using the van Deemter terms.
C) Does this figure support your explanations in application question 33?
Explain why or why not and make any changes in your answers in light of
this figure.
Figure 4 SEM images of
sections of packed columns
for a) 750 and b) 30-um-i.d.
capillary columns.³
fcrip
= ↓ bandwidth Il temp
32. What impact (increase, decrease, or no change) does each of the following conditions have on the individual
components of the van Deemter equation and consequently, band broadening?
Increase temperature
Longer column
Using a gas mobile phase
instead of liquid
Smaller particle stationary phase
Multiple Paths
Diffusion
Mass Transfer
34. Figure 3 shows Van Deemter plots for a solute molecule using different column inner diameters (i.d.).
A) Predict whether decreasing the column inner diameters increase or decrease bandwidth.
B) Predict which van Deemter equation coefficient (A, B, or C) has the greatest effect on increasing or
decreasing bandwidth as a function of i.d. and justify your answer.
Figure 3 Van Deemter plots for hydroquinone using different column inner diameters (i.d. in μm). The data was
obtained from liquid chromatography experiments using fused-silica capillary columns packed with 1.0-μm particles.
35
20
H(um)
큰 20
15
90
0+
1500
100
75
550
01
02
594
05
μ(cm/sec)
30
15
10
Chapter 2 Solutions
Chemistry: Principles and Practice
Ch. 2 - Prob. 2.1QECh. 2 - State how Daltons atomic theory explains (a) the...Ch. 2 - Prob. 2.3QECh. 2 - Prob. 2.4QECh. 2 - Prob. 2.5QECh. 2 - Prob. 2.6QECh. 2 - Prob. 2.7QECh. 2 - Describe the arrangement of protons, neutrons, and...Ch. 2 - Prob. 2.9QECh. 2 - Prob. 2.10QE
Ch. 2 - A mass spectrometer determines isotopic masses to...Ch. 2 - Prob. 2.12QECh. 2 - Prob. 2.13QECh. 2 - Prob. 2.14QECh. 2 - Prob. 2.15QECh. 2 - Prob. 2.16QECh. 2 - Sulfur dioxide, SO2, is a molecular compound that...Ch. 2 - Prob. 2.18QECh. 2 - Prob. 2.19QECh. 2 - Prob. 2.20QECh. 2 - Prob. 2.21QECh. 2 - Prob. 2.22QECh. 2 - Prob. 2.23QECh. 2 - Prob. 2.24QECh. 2 - Prob. 2.25QECh. 2 - Prob. 2.26QECh. 2 - Prob. 2.27QECh. 2 - Prob. 2.28QECh. 2 - Prob. 2.29QECh. 2 - Give the complete symbol (XZA), including atomic...Ch. 2 - Prob. 2.31QECh. 2 - Prob. 2.32QECh. 2 - Prob. 2.33QECh. 2 - Prob. 2.34QECh. 2 - Prob. 2.35QECh. 2 - Prob. 2.36QECh. 2 - Prob. 2.37QECh. 2 - Prob. 2.38QECh. 2 - Prob. 2.39QECh. 2 - Prob. 2.40QECh. 2 - Prob. 2.41QECh. 2 - Prob. 2.42QECh. 2 - Prob. 2.43QECh. 2 - Prob. 2.44QECh. 2 - Prob. 2.45QECh. 2 - Prob. 2.46QECh. 2 - Prob. 2.47QECh. 2 - Prob. 2.48QECh. 2 - Prob. 2.49QECh. 2 - Prob. 2.50QECh. 2 - Prob. 2.51QECh. 2 - Prob. 2.52QECh. 2 - Prob. 2.53QECh. 2 - Prob. 2.54QECh. 2 - Prob. 2.55QECh. 2 - Prob. 2.56QECh. 2 - Prob. 2.57QECh. 2 - Prob. 2.58QECh. 2 - Prob. 2.59QECh. 2 - Prob. 2.60QECh. 2 - Prob. 2.61QECh. 2 - Prob. 2.62QECh. 2 - Prob. 2.63QECh. 2 - Prob. 2.64QECh. 2 - Prob. 2.65QECh. 2 - Prob. 2.66QECh. 2 - Prob. 2.67QECh. 2 - Prob. 2.68QECh. 2 - Prob. 2.69QECh. 2 - Prob. 2.70QECh. 2 - Prob. 2.71QECh. 2 - Prob. 2.72QECh. 2 - Prob. 2.73QECh. 2 - Prob. 2.74QECh. 2 - Prob. 2.75QECh. 2 - Prob. 2.76QECh. 2 - Prob. 2.77QECh. 2 - Prob. 2.78QECh. 2 - Prob. 2.79QECh. 2 - Prob. 2.80QECh. 2 - Prob. 2.81QECh. 2 - Prob. 2.82QECh. 2 - Prob. 2.83QECh. 2 - Prob. 2.84QECh. 2 - Prob. 2.85QECh. 2 - Prob. 2.86QECh. 2 - Prob. 2.87QECh. 2 - Prob. 2.88QECh. 2 - Prob. 2.89QECh. 2 - Prob. 2.90QECh. 2 - Prob. 2.91QECh. 2 - Prob. 2.92QECh. 2 - Prob. 2.93QECh. 2 - Prob. 2.94QECh. 2 - Prob. 2.95QECh. 2 - Prob. 2.96QECh. 2 - Write the formula of (a) manganese(III) sulfide....Ch. 2 - Prob. 2.98QECh. 2 - Prob. 2.99QECh. 2 - Prob. 2.100QECh. 2 - Prob. 2.101QECh. 2 - Prob. 2.102QECh. 2 - Prob. 2.103QECh. 2 - Prob. 2.104QECh. 2 - Prob. 2.105QECh. 2 - Prob. 2.106QECh. 2 - Prob. 2.107QECh. 2 - Prob. 2.108QECh. 2 - Prob. 2.109QECh. 2 - Prob. 2.110QECh. 2 - Prob. 2.111QECh. 2 - Prob. 2.112QECh. 2 - Prob. 2.113QECh. 2 - Prob. 2.114QECh. 2 - Prob. 2.115QECh. 2 - Prob. 2.116QECh. 2 - Prob. 2.117QECh. 2 - Prob. 2.118QECh. 2 - Prob. 2.119QECh. 2 - Prob. 2.120QECh. 2 - Prob. 2.121QECh. 2 - Prob. 2.122QECh. 2 - Prob. 2.123QECh. 2 - Prob. 2.124QECh. 2 - Prob. 2.125QECh. 2 - Prob. 2.126QECh. 2 - Prob. 2.127QECh. 2 - Prob. 2.128QECh. 2 - Prob. 2.129QECh. 2 - Prob. 2.130QECh. 2 - Prob. 2.131QECh. 2 - Prob. 2.132QECh. 2 - Prob. 2.133QECh. 2 - Prob. 2.134QECh. 2 - Prob. 2.135QECh. 2 - Prob. 2.136QE
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