General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN: 9781305580343
Author: Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher: Cengage Learning
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Chapter 9, Problem 9.112QP
Interpretation Introduction
Interpretation:
The advantages of an ionic liquid as a solvent have over using an Organic solvent has to be discussed.
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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 9 Solutions
General Chemistry - Standalone book (MindTap Course List)
Ch. 9.1 - Represent the transfer of electrons from magnesium...Ch. 9.2 - Prob. 9.2ECh. 9.2 - Prob. 9.3ECh. 9.2 - Prob. 9.4ECh. 9.2 - The following are electron configurations for some...Ch. 9.3 - Which has the larger radius, S or S2? Explain.Ch. 9.3 - Without looking at Table 9.3, arrange the...Ch. 9.3 - Prob. 9.7ECh. 9.5 - Using electronegativities, decide which of the...Ch. 9.6 - Dichlorodifluoromethane, CCl2F2, is a gas used as...
Ch. 9.6 - Prob. 9.10ECh. 9.6 - Prob. 9.11ECh. 9.6 - Prob. 9.2CCCh. 9.7 - Prob. 9.12ECh. 9.8 - Prob. 9.13ECh. 9.8 - Prob. 9.14ECh. 9.9 - Prob. 9.15ECh. 9.9 - Prob. 9.3CCCh. 9.10 - Estimate the OH bond length in H2O from the...Ch. 9.10 - Formic acid, isolated in 1670, is the irritant in...Ch. 9.11 - Use bond enthalpies to estimate the enthalpy...Ch. 9 - Describe the formation of a sodium chloride...Ch. 9 - Prob. 9.2QPCh. 9 - Prob. 9.3QPCh. 9 - Define lattice energy for potassium bromide.Ch. 9 - Why do most monatomic cations of the main-group...Ch. 9 - Prob. 9.6QPCh. 9 - Prob. 9.7QPCh. 9 - Prob. 9.8QPCh. 9 - Prob. 9.9QPCh. 9 - Draw a potential-energy diagram for a molecule...Ch. 9 - Prob. 9.11QPCh. 9 - Prob. 9.12QPCh. 9 - Prob. 9.13QPCh. 9 - Prob. 9.14QPCh. 9 - Prob. 9.15QPCh. 9 - Prob. 9.16QPCh. 9 - Prob. 9.17QPCh. 9 - Prob. 9.18QPCh. 9 - Which of the following contains both ionic and...Ch. 9 - The radii of the species S, S+, and S decrease in...Ch. 9 - Prob. 9.21QPCh. 9 - Prob. 9.22QPCh. 9 - Prob. 9.23QPCh. 9 - Bond Enthalpy When atoms of the hypothetical...Ch. 9 - You land on a distant planet in another universe...Ch. 9 - Which of the following represent configurations of...Ch. 9 - Prob. 9.27QPCh. 9 - Prob. 9.28QPCh. 9 - Prob. 9.29QPCh. 9 - For each of the following molecular models, write...Ch. 9 - For each of the following molecular formulas, draw...Ch. 9 - Below are three resonance formulas for N2O...Ch. 9 - Lithium, Li, reacts with element X to form an...Ch. 9 - Prob. 9.34QPCh. 9 - Prob. 9.35QPCh. 9 - Prob. 9.36QPCh. 9 - Use Lewis symbols to represent the transfer of...Ch. 9 - Use Lewis symbols to represent the electron...Ch. 9 - Prob. 9.39QPCh. 9 - Prob. 9.40QPCh. 9 - Prob. 9.41QPCh. 9 - Prob. 9.42QPCh. 9 - Prob. 9.43QPCh. 9 - Prob. 9.44QPCh. 9 - Prob. 9.45QPCh. 9 - Prob. 9.46QPCh. 9 - Prob. 9.47QPCh. 9 - Which has the larger radius, N3 or P3? Explain....Ch. 9 - Arrange the following in order of increasing ionic...Ch. 9 - Arrange the following in order of increasing ionic...Ch. 9 - Use Lewis symbols to show the reaction of atoms to...Ch. 9 - Prob. 9.52QPCh. 9 - Assuming that the atoms form the normal number of...Ch. 9 - Assuming that the atoms form the normal number of...Ch. 9 - Prob. 9.55QPCh. 9 - Prob. 9.56QPCh. 9 - Arrange the following bonds in order of increasing...Ch. 9 - Decide which of the following bonds is least polar...Ch. 9 - Prob. 9.59QPCh. 9 - Prob. 9.60QPCh. 9 - Prob. 9.61QPCh. 9 - Write Lewis formulas for the following molecules:...Ch. 9 - Write Lewis formulas for the following molecules:...Ch. 9 - Write Lewis formulas for the following molecules:...Ch. 9 - Write Lewis formulas for the following ions: a ClO...Ch. 9 - Write Lewis formulas for the following ions: a...Ch. 9 - Write resonance descriptions for the following: a...Ch. 9 - Prob. 9.68QPCh. 9 - Prob. 9.69QPCh. 9 - Prob. 9.70QPCh. 9 - Write Lewis formulas for the following: a XeF2 b...Ch. 9 - Write Lewis formulas for the following: a I3 b...Ch. 9 - Write Lewis formulas for the following: a BCl3 b...Ch. 9 - Write Lewis formulas for the following: a BeF2 b...Ch. 9 - Write a Lewis formula for each of the following,...Ch. 9 - Write a Lewis formula for each of the following,...Ch. 9 - Prob. 9.77QPCh. 9 - For each of the following, use formal charges to...Ch. 9 - Prob. 9.79QPCh. 9 - Prob. 9.80QPCh. 9 - Calculate the bond length for each of the...Ch. 9 - Prob. 9.82QPCh. 9 - One of the following compounds has a...Ch. 9 - Prob. 9.84QPCh. 9 - Use bond enthalpies (Table 9.5) to estimate H for...Ch. 9 - A commercial process for preparing ethanol (ethyl...Ch. 9 - For each of the following pairs of elements, state...Ch. 9 - For each of the following pairs of elements, state...Ch. 9 - Prob. 9.89QPCh. 9 - Prob. 9.90QPCh. 9 - Iodic acid, HIO3, is a colorless, crystalline...Ch. 9 - Prob. 9.92QPCh. 9 - Sodium amide, known commercially as sodamide, is...Ch. 9 - Prob. 9.94QPCh. 9 - Nitronium perchlorate, NO2ClO4, is a reactive salt...Ch. 9 - Solid phosphorus pentabromide, PBr5, has been...Ch. 9 - Write electron-dot formulas for the following: a...Ch. 9 - Prob. 9.98QPCh. 9 - Prob. 9.99QPCh. 9 - Write Lewis formulas for the following: a AlCl4 b...Ch. 9 - Prob. 9.101QPCh. 9 - Prob. 9.102QPCh. 9 - Prob. 9.103QPCh. 9 - Acetic acid has the structure CH3CO(OH), in which...Ch. 9 - Prob. 9.105QPCh. 9 - Methyl nitrite has the structure No attempt has...Ch. 9 - Prob. 9.107QPCh. 9 - Prob. 9.108QPCh. 9 - Use bond enthalpies to estimate H for the reaction...Ch. 9 - Prob. 9.110QPCh. 9 - Compare the properties of an ionic material such...Ch. 9 - Prob. 9.112QPCh. 9 - Explain the decomposition of nitroglycerin in...Ch. 9 - How did the Swedish chemist Alfred Nobel manage to...Ch. 9 - What property of a chemical bond gives rise to the...Ch. 9 - Prob. 9.116QPCh. 9 - Prob. 9.117QPCh. 9 - Calculate the lattice energy of potassium...Ch. 9 - Prob. 9.119QPCh. 9 - Prob. 9.120QPCh. 9 - Prob. 9.121QPCh. 9 - An ion M2+ has the configuration [Ar]3d2, and an...Ch. 9 - Prob. 9.123QPCh. 9 - Prob. 9.124QPCh. 9 - Prob. 9.125QPCh. 9 - Prob. 9.126QPCh. 9 - Which of the following molecules contains only...Ch. 9 - Prob. 9.128QPCh. 9 - Two fourth-period atoms, one of a transition...Ch. 9 - Prob. 9.130QPCh. 9 - Draw resonance formulas of the phosphoric acid...Ch. 9 - Prob. 9.132QPCh. 9 - Prob. 9.133QPCh. 9 - Prob. 9.134QPCh. 9 - Prob. 9.135QPCh. 9 - Prob. 9.136QPCh. 9 - Phosphorous acid. H3PO3, has the structure...Ch. 9 - Hypophosphorous acid, H3PO2, has the structure...Ch. 9 - An ionic compound has the following composition...Ch. 9 - An ionic compound has the following composition...Ch. 9 - A gaseous compound has the following composition...Ch. 9 - A liquid compound used in dry cleaning contains...Ch. 9 - A compound of tin and chlorine is a colorless...Ch. 9 - Prob. 9.144QPCh. 9 - Calculate the enthalpy of reaction for...Ch. 9 - Prob. 9.146QPCh. 9 - Prob. 9.147QPCh. 9 - Prob. 9.148QPCh. 9 - Prob. 9.149QPCh. 9 - Prob. 9.150QP
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