Chemistry
4th Edition
ISBN: 9780078021527
Author: Julia Burdge
Publisher: McGraw-Hill Education
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Chapter 11, Problem 121AP
Interpretation Introduction
Interpretation:
The molar heat of sublimation of molecular iodine at 25°C is to be determined.
Concept introduction:
The molar heat of sublimation is defined as the sum of molar heat of fusion and molar heat of vaporization.
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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 11 Solutions
Chemistry
Ch. 11.1 - Prob. 1PPACh. 11.1 - Prob. 1PPBCh. 11.1 - Prob. 1PPCCh. 11.1 - Prob. 1CPCh. 11.1 - Prob. 2CPCh. 11.2 - Prob. 1PPACh. 11.2 - Prob. 1PPBCh. 11.2 - Prob. 1PPCCh. 11.2 - Prob. 1CPCh. 11.2 - 11.2.2 Given the following information for ...
Ch. 11.2 - 11.2.3 Using the graph, estimate the vapor...Ch. 11.2 - Using the result from question 11.2.3 and another...Ch. 11.3 - Practice ProblemATTEMPT When silver crystallizes,...Ch. 11.3 - Practice Problem BUILD
The density of sodium metal...Ch. 11.3 - Practice Problem CONCEPTUALIZE The diagram shows...Ch. 11.3 - 11.3.1 Nickel has a face-centered cubic unit cell...Ch. 11.3 - A metal crystalizes in a body-centered cubic unit...Ch. 11.4 - Prob. 1PPACh. 11.4 - Prob. 1PPBCh. 11.4 - Prob. 1PPCCh. 11.4 - 11.4.1 The diagram here shows the anions in the...Ch. 11.4 - 11.4.2 At what angle would you expect X rays of...Ch. 11.5 - Practice ProblemATTEMPT LiF has the same unit cell...Ch. 11.5 - Practice ProblemBUILD NiO also adopts the...Ch. 11.5 - Practice ProblemCONCEPTUALIZE Referring to the...Ch. 11.6 - Practice Problem ATTEMPT
Aluminum metal...Ch. 11.6 - Practice Problem BUILD
Copper crystallizes in a...Ch. 11.6 - Prob. 1PPCCh. 11.6 - 11.6.1 How much energy (in kJ) is required to...Ch. 11.6 - 11.6.2 How much energy (in kJ) is given off when...Ch. 11.7 - Practice ProblemATTEMPT Calculate the amount of...Ch. 11.7 - Practice ProblemBUILD Determine the final state...Ch. 11.7 - Prob. 1PPCCh. 11.7 - Prob. 1CPCh. 11.7 - Prob. 2CPCh. 11.8 - Prob. 1PPACh. 11.8 - Practice Problem BUILD
Sketch the phase diagram of...Ch. 11.8 - Prob. 1PPCCh. 11 - Which of the following would you expect to be more...Ch. 11 - 11.2
Which of the following would you expect to be...Ch. 11 - Prob. 3KSPCh. 11 - Prob. 4KSPCh. 11 - Give an example for each type of intermolecular...Ch. 11 - 11.2 Explain the term polarizability. What kind of...Ch. 11 - Prob. 3QPCh. 11 - Prob. 4QPCh. 11 - 11.5 What physical properties are determined by...Ch. 11 - Prob. 6QPCh. 11 - Describe the types of intermolecular forces that...Ch. 11 - Prob. 8QPCh. 11 - Prob. 9QPCh. 11 - The binary hydrogen compounds of the Group 4A...Ch. 11 - 11.11 List the types of intermolecular forces that...Ch. 11 - Prob. 12QPCh. 11 - Prob. 13QPCh. 11 - Arrange the following in order of increasing...Ch. 11 - Diethyl ether has a boiling point of 34 .5°C , and...Ch. 11 - 11.16 Which member of each of the following pairs...Ch. 11 - Prob. 17QPCh. 11 - Explain in terms of intermolecular forces why (a)...Ch. 11 - What kind of attractive forces must be overcome to...Ch. 11 - Prob. 20QPCh. 11 - Prob. 21QPCh. 11 - Explain why liquids, unlike gases, are virtually...Ch. 11 - 11.23 What is surface tension? What is the...Ch. 11 - Prob. 24QPCh. 11 - Prob. 25QPCh. 11 - 11.26 A glass can be filled slightly above the rim...Ch. 11 - 11.27 Draw diagrams showing the capillary action...Ch. 11 - Prob. 28QPCh. 11 - Why does the viscosity of a liquid decrease with...Ch. 11 - Why is ice less dense than water?Ch. 11 - 11.31 Outdoor water pipes have to be drained or...Ch. 11 - Prob. 32QPCh. 11 - Prob. 33QPCh. 11 - Prob. 34QPCh. 11 - Predict the viscosity of ethylene glycol relative...Ch. 11 - 11.36 Vapor pressure measurements at several...Ch. 11 - The vapor pressure of liquid X is lower than that...Ch. 11 - 11.38 Define the following terms: crystalline...Ch. 11 - Describe the geometries of the following cubic...Ch. 11 - Classify the solid states in terms of crystal...Ch. 11 - The melting points of the oxides of the...Ch. 11 - Define X-ray diffraction. What are the typical...Ch. 11 - 11.43 Write the Bragg equation. Define every term...Ch. 11 - 11.44 What is the coordination number of each...Ch. 11 - Calculate the number of spheres that would be...Ch. 11 - Metallic iron crystallizes in a cubic lattice. The...Ch. 11 - Barium metal crystallizes in a body-centered cubic...Ch. 11 - 11.48 Vanadium crystallizes in a body-centered...Ch. 11 - Europium crystallizes in a body-centered cubic...Ch. 11 - 11.50 Crystalline silicon has a cubic structure....Ch. 11 - 11.51 A face-centered cubic cell contains 8 X...Ch. 11 - When X rays of wavelength 0.090 nm are diffracted...Ch. 11 - The distance between layers in an NaCl crystal is...Ch. 11 - Identify the unit cell of molecular iodine ( I 2 )...Ch. 11 - Shown here is a zinc oxide unit cell. What is the...Ch. 11 - Prob. 56QPCh. 11 - Prob. 57QPCh. 11 - A solid is hard, brittle, and electrically...Ch. 11 - A solid is soft and has a low melting point (below...Ch. 11 - Prob. 60QPCh. 11 - 11.61 Which of the following are molecular solids...Ch. 11 - Classify the solid state of the following...Ch. 11 - Prob. 63QPCh. 11 - Prob. 64QPCh. 11 - Define glass. What is the chief component of...Ch. 11 - 11.66 What is a phase change? Name all possible...Ch. 11 - What is the equilibrium vapor pressure of a...Ch. 11 - Use any one of the phase changes to explain what...Ch. 11 - 11.69 Define the following terms: (a) molar heat...Ch. 11 - How is the molar heat of sublimation related to...Ch. 11 - What can we learn about the intermolecular forces...Ch. 11 - The greater the molar heat of vaporization of a...Ch. 11 - Prob. 73QPCh. 11 - As a liquid is heated at constant pressure, its...Ch. 11 - What is critical temperature? What is the...Ch. 11 - Prob. 76QPCh. 11 - 11.77 How do the boiling points and melting points...Ch. 11 - Prob. 78QPCh. 11 - The vapor pressure of a liquid in a closed...Ch. 11 - Wet clothes dry more quickly on a hot, dry day...Ch. 11 - Which of the following phase transitions gives off...Ch. 11 - 11.82 A beaker of water is heated to boiling by a...Ch. 11 - Prob. 83QPCh. 11 - Calculate the amount of heat (in kJ) required to...Ch. 11 - Prob. 85QPCh. 11 - The molar heats of fusion and sublimation of...Ch. 11 - How is the rate of evaporation of a liquid...Ch. 11 - 11.88 The following compounds, listed with their...Ch. 11 - Prob. 89QPCh. 11 - A student hangs wet clothes outdoors on a winter...Ch. 11 - Explain why steam at 100°C causes more serious...Ch. 11 - What is a phase diagram? What useful information...Ch. 11 - 11.93 Explain how water’s phase diagram differs...Ch. 11 - The blades of ice skates are quite thin, so the...Ch. 11 - 11.95 A length of wire is placed on top of a block...Ch. 11 - Prob. 96QPCh. 11 - Prob. 97QPCh. 11 - 11.98 Name the kinds of attractive forces that...Ch. 11 - Prob. 99APCh. 11 - At –35°C , liquid HI has a higher vapor pressure...Ch. 11 - Prob. 101APCh. 11 - Prob. 102APCh. 11 - Prob. 103APCh. 11 - Prob. 104APCh. 11 - Prob. 105APCh. 11 - A CO 2 fire extinguisher is located on the outside...Ch. 11 - Prob. 107APCh. 11 - A flask of water is connected to a powerful vacuum...Ch. 11 - Prob. 109APCh. 11 - The interionic distances of several alkali halide...Ch. 11 - Which has a greater density, crystalline Si O 2 or...Ch. 11 - A student is given four solid samples labeled W,...Ch. 11 - Prob. 113APCh. 11 - Prob. 114APCh. 11 - X rays of wavelength 0.154 nm strike an aluminum...Ch. 11 - 11.116 The properties of gases, liquids, and...Ch. 11 - Prob. 117APCh. 11 - Prob. 118APCh. 11 - Prob. 119APCh. 11 - Prob. 120APCh. 11 - Prob. 121APCh. 11 - 11.122 The distance between and is 257 pm in...Ch. 11 - Prob. 123APCh. 11 - Prob. 124APCh. 11 - 11.125 Calculate the for the following processes...Ch. 11 - 11.126 Which liquid would you expect to have a...Ch. 11 - 11.127 A beaker of water is placed in a closed...Ch. 11 - Prob. 128APCh. 11 - Prob. 129APCh. 11 - Carbon and silicon belong to Group 4A of the...Ch. 11 - Prob. 131APCh. 11 - Prob. 132APCh. 11 - Prob. 133APCh. 11 - Prob. 134APCh. 11 - Prob. 135APCh. 11 - Prob. 136APCh. 11 - Prob. 137APCh. 11 - Prob. 138APCh. 11 - Prob. 139APCh. 11 - 11.140 Sketch the cooling curves of water from...Ch. 11 - Prob. 141APCh. 11 - Prob. 142APCh. 11 - A closed vessel of volume 9.6 L contains 2.0 g of...Ch. 11 - 11.144 The electrical conductance of copper metal...Ch. 11 - 11.145 Assuming ideal behavior, calculate the...Ch. 11 - Prob. 146APCh. 11 - Which of the following compounds is most likely to...Ch. 11 - 11.148 A chemistry instructor performed the...Ch. 11 - Prob. 149APCh. 11 - Prob. 150APCh. 11 - The phase diagram of helium is shown. Helium is...Ch. 11 - 11.152 The phase diagram of sulfur is shown. (a)...Ch. 11 - Prob. 153APCh. 11 - Prob. 154APCh. 11 - Prob. 155APCh. 11 - Prob. 156APCh. 11 - Prob. 157APCh. 11 - Prob. 158APCh. 11 - 11.159 Why do citrus growers spray their trees...Ch. 11 - Prob. 2SEPPCh. 11 - 3. Each cubic unit cell (edge length a = 543 pm)...
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