Modified Mastering Chemistry with Pearson eText -- Standalone Access Card -- for Chemistry: A Molecular Approach (4th Edition)
4th Edition
ISBN: 9780134162430
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter 15, Problem 70E
Interpretation Introduction
To determine: The direction of the given reaction.
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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 15 Solutions
Modified Mastering Chemistry with Pearson eText -- Standalone Access Card -- for Chemistry: A Molecular Approach (4th Edition)
Ch. 15 - Prob. 1SAQCh. 15 - Q2. The equilibrium constant for the reaction...Ch. 15 - Q3. Use the data shown here to find the...Ch. 15 - Prob. 4SAQCh. 15 - Prob. 5SAQCh. 15 - Q6. For the reaction 2 A(g) B(g), the equilibrium...Ch. 15 - Q7. Consider the reaction between iodine gas and...Ch. 15 - Prob. 8SAQCh. 15 - Prob. 9SAQCh. 15 - Prob. 10SAQ
Ch. 15 - Prob. 11SAQCh. 15 - Prob. 12SAQCh. 15 - 1. How does a developing fetus get oxygen in the...Ch. 15 - Prob. 2ECh. 15 - Prob. 3ECh. 15 - Prob. 4ECh. 15 - Prob. 5ECh. 15 - Prob. 6ECh. 15 - Prob. 7ECh. 15 - Prob. 8ECh. 15 - Prob. 9ECh. 15 - Prob. 10ECh. 15 - Prob. 11ECh. 15 - Prob. 12ECh. 15 - Prob. 13ECh. 15 - Prob. 14ECh. 15 - Prob. 15ECh. 15 - Prob. 16ECh. 15 - Prob. 17ECh. 15 - Prob. 18ECh. 15 - Prob. 19ECh. 15 - Prob. 20ECh. 15 - Prob. 21ECh. 15 - Prob. 22ECh. 15 - 23. When this reaction comes to equilibrium, will...Ch. 15 - Prob. 24ECh. 15 - 25. H2 and I2 are combined in a flask and allowed...Ch. 15 - Prob. 26ECh. 15 - Prob. 27ECh. 15 - 28. This reaction has an equilibrium constant of...Ch. 15 - 29. Consider the reactions and their respective...Ch. 15 - 30. Use the reactions and their equilibrium...Ch. 15 - Prob. 31ECh. 15 - 32. Calculate Kp for each reaction.
a. N2O4(g) 2...Ch. 15 - 33. Write an equilibrium expression for each...Ch. 15 - 34. Find and fix the mistake in the equilibrium...Ch. 15 - Prob. 35ECh. 15 - Prob. 36ECh. 15 - 37. Consider the reaction:
N2(g) + 3 H2(g) 2...Ch. 15 - 38. Consider the following reaction:
H2(g) + I2(g)...Ch. 15 - 39. Consider the reaction:
2 NO(g) + Br2(g) 2...Ch. 15 - 40. Consider the reaction:
SO2Cl2(g) SO2(g) +...Ch. 15 - 41. For the reaction A(g) 2 B(g), a reaction...Ch. 15 - Prob. 42ECh. 15 - 43. Consider the reaction:
Fe3+(aq) + SCN–(aq) ...Ch. 15 - 44. Consider the reaction:
SO2Cl2(g) SO2(g) +...Ch. 15 - 45. Consider the reaction:
H2(g) + I2(g) 2...Ch. 15 - 46. Consider the reaction:
CO(g) + 2 H2(g) ...Ch. 15 - 47. Consider the reaction:
NH4HS(s) NH3(g) +...Ch. 15 - 48. Consider the reaction:
2 H2S(g) 2 H2(g) +...Ch. 15 - 49. Silver sulfate dissolves in water according to...Ch. 15 - 50. Nitrogen dioxide dimerizes according to the...Ch. 15 - 51. Consider the reaction and the associated...Ch. 15 - 52. Consider the reaction and the associated...Ch. 15 - 53. For the reaction shown here, Kc = 0.513 at 500...Ch. 15 - 54. For the reaction shown here, Kc = 255 at 1000...Ch. 15 - 55. Consider the reaction:
NiO(s) + CO(g) Ni(s) +...Ch. 15 - 56. Consider the reaction:
CO(g) + H2O(g) CO2(g)...Ch. 15 - 57. Consider the reaction:
HC2H3O2(aq) + H2O(l) ...Ch. 15 - 58. Consider the reaction:
SO2Cl2(g) SO2(g) +...Ch. 15 - 59. Consider the reaction:
Br2(g) + Cl2(g) 2...Ch. 15 - 60. Consider the reaction:
CO(g) + H2O(g) CO2(g)...Ch. 15 - Prob. 61ECh. 15 - Prob. 62ECh. 15 - Prob. 63ECh. 15 - 64. Consider this reaction at equilibrium:
2...Ch. 15 - 65. Consider this reaction at equilibrium:
2...Ch. 15 - 66. Consider this reaction at equilibrium:
C(s) +...Ch. 15 - 67. Each reaction is allowed to come to...Ch. 15 - Prob. 68ECh. 15 - Prob. 69ECh. 15 - Prob. 70ECh. 15 - Prob. 71ECh. 15 - Prob. 72ECh. 15 - 73. Carbon monoxide replaces oxygen in oxygenated...Ch. 15 - Prob. 74ECh. 15 - Prob. 75ECh. 15 - 76. A mixture of water and graphite is heated to...Ch. 15 - Prob. 77ECh. 15 - 78. A system at equilibrium contains I2(g) at a...Ch. 15 - Prob. 79ECh. 15 - Prob. 80ECh. 15 - Prob. 81ECh. 15 - Prob. 82ECh. 15 - Prob. 83ECh. 15 - Prob. 84ECh. 15 - 85. The system described by the reaction: CO(g) +...Ch. 15 - Prob. 86ECh. 15 - 87. At 70 K, CCl4 decomposes to carbon and...Ch. 15 - Prob. 88ECh. 15 - 89. A sample of CaCO3(s) is introduced into a...Ch. 15 - Prob. 90ECh. 15 - Prob. 91ECh. 15 - Prob. 92ECh. 15 - Prob. 93ECh. 15 - Prob. 94ECh. 15 - Prob. 95ECh. 15 - Prob. 96ECh. 15 - Prob. 97ECh. 15 - Prob. 98ECh. 15 - 99. A sample of SO3 is introduced into an...Ch. 15 - 100. A reaction A(g) B(g) has an equilibrium...Ch. 15 - Prob. 101ECh. 15 - Prob. 102ECh. 15 - Prob. 103ECh. 15 - Prob. 104ECh. 15 - Prob. 105ECh. 15 - Prob. 106QGWCh. 15 - Prob. 107QGWCh. 15 - Prob. 108QGWCh. 15 - Prob. 109QGWCh. 15 - Prob. 110QGWCh. 15 - Prob. 111DIA
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