Principles of General, Organic, Biological Chemistry
2nd Edition
ISBN: 9780073511191
Author: Janice Gorzynski Smith Dr.
Publisher: McGraw-Hill Education
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Question
Chapter 3.3, Problem 3.9P
Interpretation Introduction
Interpretation:
The formula of the ionic compound zinc oxide has to be given.
Concept Introduction:
Ionic compounds: Ionic compounds consist of cations and anions. The sum of the charges in an ionic compound is always zero (overall). Ionic bonds held the ions together to form ionic compounds.
Rules for determining the formula of an ionic compound:
- 1. The cation and anion is determined, and the periodic table is used to determine the charges.
- 2. One of each ion is required, when ions of equal charge combine. The ionic charges are used to determine relative number of each ion, when ions of unequal charges are combined.
- 3. The formula of the cation is written first, followed by the anion. The charges are omitted and the number of each ion is indicated using subscripts.
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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 3 Solutions
Principles of General, Organic, Biological Chemistry
Ch. 3.1 - Predict whether the bonds in the following species...Ch. 3.2 - Write the ion symbol for an atom with the given...Ch. 3.2 - Prob. 3.4PCh. 3.2 - Prob. 3.5PCh. 3.2 - How many electrons and protons are contained in...Ch. 3.2 - Prob. 3.7PCh. 3.3 - Write the formula for the ionic compound formed...Ch. 3.3 - Prob. 3.9PCh. 3.4 - Prob. 3.10PCh. 3.4 - Give the symbol for each ion. a. stannous b....
Ch. 3.4 - Name each ionic compound. a. NaF b. MgO c. SrBr2...Ch. 3.4 - Name each ionic compound. a. CrCl3 b. PbS c. SnF4...Ch. 3.4 - Prob. 3.14PCh. 3.5 - List four physical properties of ionic compounds.Ch. 3.6 - Write the formula for the compound formed when K+...Ch. 3.6 - Prob. 3.17PCh. 3.6 - Name each compound. a. Na2CO3 b. Ca(OH)2 c....Ch. 3.6 - Prob. 3.19PCh. 3.7 - Use electron-dot symbols to show how a hydrogen...Ch. 3.7 - Prob. 3.21PCh. 3.8 - Draw a Lewis structure for each covalent molecule....Ch. 3.8 - Prob. 3.23PCh. 3.8 - Prob. 3.24PCh. 3.9 - Prob. 3.25PCh. 3.9 - Prob. 3.26PCh. 3.10 - Prob. 3.27PCh. 3.11 - Prob. 3.28PCh. 3.11 - Prob. 3.29PCh. 3.11 - Show the direction of the dipole in each bond....Ch. 3.12 - Prob. 3.31PCh. 3.12 - Prob. 3.32PCh. 3 - Which formulas represent ionic compounds and which...Ch. 3 - Which pairs of elements are likely to form ionic...Ch. 3 - Prob. 3.35UKCCh. 3 - Prob. 3.36UKCCh. 3 - Prob. 3.37UKCCh. 3 - Prob. 3.38UKCCh. 3 - Prob. 3.39UKCCh. 3 - Prob. 3.40UKCCh. 3 - Prob. 3.41UKCCh. 3 - Prob. 3.42UKCCh. 3 - Prob. 3.43UKCCh. 3 - Prob. 3.44UKCCh. 3 - Prob. 3.45UKCCh. 3 - Prob. 3.46UKCCh. 3 - (a) Translate each ball-and-stick model to a Lewis...Ch. 3 - Prob. 3.48UKCCh. 3 - Prob. 3.49APCh. 3 - How many protons and electrons are present in each...Ch. 3 - Prob. 3.51APCh. 3 - Prob. 3.52APCh. 3 - Prob. 3.53APCh. 3 - Give the ion symbol for each ion. a. barium ion b....Ch. 3 - Prob. 3.65APCh. 3 - Write the formula for the ionic compound formed...Ch. 3 - Prob. 3.67APCh. 3 - Prob. 3.68APCh. 3 - Name each ionic compound. a. Na2O b. BaS c. PbS2...Ch. 3 - Name each ionic compound. a. KF b. ZnCl2 c. Cu2S...Ch. 3 - Prob. 3.71APCh. 3 - Write formulas to illustrate the difference...Ch. 3 - Prob. 3.73APCh. 3 - Name each ionic compound. a. (NH4)2SO4 b. NaH2PO4...Ch. 3 - Prob. 3.75APCh. 3 - Prob. 3.76APCh. 3 - Prob. 3.77APCh. 3 - Label each statement as true or false. Correct any...Ch. 3 - Prob. 3.79APCh. 3 - Prob. 3.80APCh. 3 - Prob. 3.81APCh. 3 - Prob. 3.82APCh. 3 - Convert the 3-D model of oxalic acid into a Lewis...Ch. 3 - Convert the 3-D model of the general anesthetic...Ch. 3 - Prob. 3.85APCh. 3 - Prob. 3.86APCh. 3 - Prob. 3.87APCh. 3 - Prob. 3.88APCh. 3 - Prob. 3.89APCh. 3 - Prob. 3.90APCh. 3 - Prob. 3.91APCh. 3 - Prob. 3.92APCh. 3 - Prob. 3.93APCh. 3 - Prob. 3.94APCh. 3 - Rank the atoms in each group in order of...Ch. 3 - Prob. 3.96APCh. 3 - Prob. 3.97APCh. 3 - Prob. 3.98APCh. 3 - Prob. 3.99APCh. 3 - Which bond in each pair is more polarthat is, has...Ch. 3 - Prob. 3.101APCh. 3 - Prob. 3.102APCh. 3 - Isobutyl cyanoacrylate is used in medical glues to...Ch. 3 - Prob. 3.104APCh. 3 - Prob. 3.105CPCh. 3 - Prob. 3.106CP
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