Mastering Chemistry with Pearson eText -- Standalone Access Card -- for Chemistry: A Molecular Approach (4th Edition)
4th Edition
ISBN: 9780134162485
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter 25, Problem 10SAQ
Interpretation Introduction
Interpretation: Amongst the given complex ions, the diamagnetic complex ion is to be determined.
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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 25 Solutions
Mastering Chemistry with Pearson eText -- Standalone Access Card -- for Chemistry: A Molecular Approach (4th Edition)
Ch. 25 - Prob. 1SAQCh. 25 - Q2. Which metal has the highest first ionization...Ch. 25 - Prob. 3SAQCh. 25 - Prob. 4SAQCh. 25 - Prob. 5SAQCh. 25 - Prob. 6SAQCh. 25 - Prob. 7SAQCh. 25 - Prob. 8SAQCh. 25 - Prob. 9SAQCh. 25 - Prob. 10SAQ
Ch. 25 - Prob. 1ECh. 25 - Prob. 2ECh. 25 - 3. Why is the +2 oxidation state so common for...Ch. 25 - 4. Explain why atomic radii of elements in the...Ch. 25 - 5. Gold is the most electronegative transition...Ch. 25 - Prob. 6ECh. 25 - Prob. 7ECh. 25 - Prob. 8ECh. 25 - Prob. 9ECh. 25 - Prob. 10ECh. 25 - Prob. 11ECh. 25 - Prob. 12ECh. 25 - Prob. 13ECh. 25 - Prob. 14ECh. 25 - Prob. 15ECh. 25 - Prob. 16ECh. 25 - 17. Write the ground state electron configuration...Ch. 25 - 18. Write the ground state electron configuration...Ch. 25 - Prob. 19ECh. 25 - Prob. 20ECh. 25 - Prob. 21ECh. 25 - Prob. 22ECh. 25 - Prob. 23ECh. 25 - Prob. 24ECh. 25 - Prob. 25ECh. 25 - Prob. 26ECh. 25 - Prob. 27ECh. 25 - Prob. 28ECh. 25 - Prob. 29ECh. 25 - Prob. 30ECh. 25 - Prob. 31ECh. 25 - Prob. 32ECh. 25 - Prob. 33ECh. 25 - Prob. 34ECh. 25 - Prob. 35ECh. 25 - Prob. 36ECh. 25 - Prob. 37ECh. 25 - Prob. 38ECh. 25 - Prob. 39ECh. 25 - Prob. 40ECh. 25 - Prob. 41ECh. 25 - Prob. 42ECh. 25 - Prob. 43ECh. 25 - Prob. 44ECh. 25 - Prob. 45ECh. 25 - Prob. 46ECh. 25 - Prob. 47ECh. 25 - Prob. 48ECh. 25 - Prob. 49ECh. 25 - Prob. 50ECh. 25 - Prob. 51ECh. 25 - Prob. 52ECh. 25 - Prob. 53ECh. 25 - Prob. 54ECh. 25 - Prob. 55ECh. 25 - Prob. 56ECh. 25 - 57. Recall from Chapter 8 that Cr and Cu are...Ch. 25 - 58. Most of the second row transition metals do...Ch. 25 - Prob. 59ECh. 25 - Prob. 60ECh. 25 - Prob. 61ECh. 25 - Prob. 62ECh. 25 - Prob. 63ECh. 25 - Prob. 64ECh. 25 - Prob. 65ECh. 25 - Prob. 66ECh. 25 - Prob. 67ECh. 25 - Prob. 68ECh. 25 - 69. When a solution of PtCl2 reacts with the...Ch. 25 - Prob. 70ECh. 25 - Prob. 71ECh. 25 - Prob. 72ECh. 25 - Prob. 73ECh. 25 - Prob. 74ECh. 25 - Prob. 75ECh. 25 - Prob. 76ECh. 25 - Prob. 77ECh. 25 - Prob. 78ECh. 25 - 79. Which element has the higher ionization...Ch. 25 - Prob. 80ECh. 25 - Prob. 81QGWCh. 25 - Prob. 82QGWCh. 25 - Prob. 83QGWCh. 25 - Prob. 84QGWCh. 25 - Prob. 85QGWCh. 25 - Prob. 86DIA
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