EBK ORGANIC CHEMISTRY
7th Edition
ISBN: 9780133556186
Author: Bruice
Publisher: VST
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Chapter 5.6, Problem 17P
Interpretation Introduction
Interpretation: From the given compounds electrophiles and nucleophiles should be identified.
Concept introduction:
Nucleophiles are the electron rich species and it can share at least a pair of electron. Nucleophiles have negative charge.
Electrophiles are electron deficient species; they look for a pair of electrons. An electrophile has a positive charge, a partial positive charge or an incomplete octet that can accept electron.
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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 5 Solutions
EBK ORGANIC CHEMISTRY
Ch. 5.1 - Determine the degree of unsaturation and then draw...Ch. 5.1 - Prob. 4PCh. 5.2 - Prob. 5PCh. 5.2 - Draw the structure for each of the following: a....Ch. 5.2 - What is each compounds systematic name?Ch. 5.4 - Assign relative priorities to each set of...Ch. 5.4 - Tamoxifen slows the growth of some breast tumors...Ch. 5.4 - Draw and label the E and Z isomers for each of the...Ch. 5.4 - Prob. 12PCh. 5.4 - Name each of the following:
Ch. 5.4 - Prob. 14PCh. 5.4 - Prob. 15PCh. 5.6 - Prob. 16PCh. 5.6 - Prob. 17PCh. 5.6 - Prob. 18PCh. 5.6 - Prob. 20PCh. 5.7 - a. Which of the monosubstituted cyclohexanes in...Ch. 5.7 - a. for which reaction in each set will S be more...Ch. 5.7 - a. For a reaction with H = 12 kcal/ mol and S =...Ch. 5.7 - Prob. 25PCh. 5.7 - Prob. 26PCh. 5.7 - Prob. 27PCh. 5.9 - The rate constant for a reaction can be increased...Ch. 5.9 - Prob. 30PCh. 5.9 - a. Which reaction has a greater equilibrium...Ch. 5.10 - Draw a reaction coordinate diagram for a two-step...Ch. 5.10 - a. Which step in the reaction coordinate diagram...Ch. 5.10 - Draw a reaction coordinate diagram for the...Ch. 5.11 - Prob. 35PCh. 5 - What is each compounds systematic name?Ch. 5 - Draw the structure of a hydrocarbon that has six...Ch. 5 - Draw the condensed structure for each of the...Ch. 5 - Prob. 39PCh. 5 - Prob. 40PCh. 5 - Name the following:Ch. 5 - Prob. 42PCh. 5 - 43. Draw the skeletal structure of...Ch. 5 - In a reaction in which reactant A is in...Ch. 5 - Which bond is stronger? Briefly explain why.Ch. 5 - Prob. 46PCh. 5 - Prob. 47PCh. 5 - Assign relative priorities to each set of...Ch. 5 - Prob. 49PCh. 5 - By following the curved red arrows, draw the...Ch. 5 - Prob. 51PCh. 5 - Draw structures for the following: a....Ch. 5 - Prob. 53PCh. 5 - a. Which of the following reactions has the larger...Ch. 5 - a. What is the equilibrium constant for a reaction...Ch. 5 - Prob. 56PCh. 5 - Prob. 57PCh. 5 - Given that the free energy of the twist-boat...Ch. 5 - Prob. 59PCh. 5 - Prob. 1PCh. 5 - Prob. 2PCh. 5 - Prob. 3PCh. 5 - Prob. 4PCh. 5 - Prob. 5PCh. 5 - Prob. 6PCh. 5 - Draw curved arrows to show the movement of the...Ch. 5 - Prob. 8PCh. 5 - Prob. 9PCh. 5 - Prob. 10P
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