Pearson eText Organic Chemistry -- Instant Access (Pearson+)
8th Edition
ISBN: 9780135213711
Author: Paula Bruice
Publisher: PEARSON+
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Question
Chapter 4.1, Problem 2P
(a)
Interpretation Introduction
Interpretation:
The cis-trans isomers for the given molecule has to be drawn.
Concept introduction:
Cis-trans terminology is used for two substituents attached to cycloalkanes.
If the two substituents are attached on each side of cycloalkanes in same side, then it is cis isomer.
If the two substituents are attached on each side of cycloalkanes in opposite manner, then it is trans isomer.
(b)
Interpretation Introduction
Interpretation:
The cis-trans isomers for the given molecule has to be drawn.
Concept introduction:
Cis-trans terminology is used for two substituents attached to cycloalkanes.
If the two substituents are attached on each side of cycloalkanes in same side, then it is cis isomer.
If the two substituents are attached on each side of cycloalkanes in opposite manner, then it is trans isomer.
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Students have asked these similar questions
On the next page is an LC separation of the parabens found in baby wash. Parabens are
suspected in a link to breast cancer therefore an accurate way to quantitate them is desired.
a. In the chromatogram, estimate k' for ethyl paraben. Clearly indicate what values you used for
all the terms in your calculation.
b. Is this a "good" value for a capacity factor? Explain.
c. What is the resolution between n-Propyl paraben and n-Butyl paraben? Again, indicate clearly
what values you used in your calculation.
MAU
| Methyl paraben
40
20
0
-2
Ethyl paraben n-Propyl paraben
n-Butyl paraben
App ID 22925
6
8
min
d. In Figure 4, each stationary phase shows some negative correlation between plate count
and retention factor. In other words, as k' increases, N decreases. Explain this relationship
between k' and N.
Plate Count (N)
4000
3500
2500
2000
1500
1000
Figure 4. Column efficiency (N) vs retention factor (k') for 22
nonionizable solutes on FMS (red), PGC (black), and COZ (green). 3000
Eluent compositions (acetonitrile/water, A/W) were adjusted to obtain
k' less than 15, which was achieved for most solutes as follows: FMS
(30/70 A/W), PGC (60/40), COZ (80/20). Slightly different
compositions were used for the most highly retained solutes. All
columns were 50 mm × 4.6 mm id and packed with 5 um particles,
except for COZ, which was packed with 3 um particles. All other
chromatographic conditions were constant: column length 5 cm,
column j.§. 4.6 mm, flow rate 2 mL/min, column temperature 40 °C,
and injection volume 0.5 μL
Log(k'x/K'ethylbenzene)
FMS
1.5
1.0
0.5
0.0
ཐྭ ཋ ཤྩ བྷྲ ;
500
0
5
10…
f. Predict how the van Deemter curve in Figure 7
would change if the temperature were raised
from 40 °C to 55 °C.
Figure 7. van Desmter curves in reduced coordinates for four
nitroalkane homologues (nitropropane, black; nitrobutane, red;
nitropentane, blue; and nitrohexane, green) separated on the FMS
phase. Chromatographic conditions: column dimensions 50 mm × 4.6
mm id, eluent 30/70 ACN/water, flow rates 0.2-5.0 mL/min, injection
volume 0.5 and column temperature 40 °C. No corrections to the
plate heights have been made to account for extracolumn dispersion.
Reduced Plate Height (h)
°
20
40
60
Reduced Velocity (v)
8. (2) A water sample is analyzed for traces of benzene using headspace analysis. The sample and
standard are spiked with a fixed amount of toluene as an internal standard. The following data are
obtained:
Ppb benzene
Peak area benzene
Peak area toluene
10.0
252
376
Sample
533
368
What is the concentration of benzene in the sample?
Chapter 4 Solutions
Pearson eText Organic Chemistry -- Instant Access (Pearson+)
Ch. 4.1 - Prob. 2PCh. 4.1 - Prob. 3PCh. 4.1 - Prob. 4PCh. 4.1 - Prob. 5PCh. 4.1 - Which of the roll owing compounds have a dipole...Ch. 4.2 - Draw and label the E and Z isomers for each of the...Ch. 4.2 - Assign relative priorities to each set of...Ch. 4.2 - Tamoxifen slows the growth of some breast tumors...Ch. 4.2 - Prob. 10PCh. 4.2 - Name each of the following:
Ch. 4.2 - Draw the Z isomer of an alkene that has a CH3 and...Ch. 4.3 - Prob. 13PCh. 4.4 - Prob. 14PCh. 4.5 - Prob. 16PCh. 4.6 - Prob. 17PCh. 4.7 - Prob. 18PCh. 4.8 - Prob. 20PCh. 4.8 - Prob. 22PCh. 4.8 - Prob. 23PCh. 4.8 - Prob. 24PCh. 4.8 - Draw a perspective formula for each or the...Ch. 4.8 - Prob. 27PCh. 4.9 - Prob. 28PCh. 4.9 - What is the configuration of the following...Ch. 4.9 - Prob. 32PCh. 4.10 - Prob. 33PCh. 4.10 - (S)-(+)-Monosodium glutamate (MSG) is a flavor...Ch. 4.11 - Prob. 35PCh. 4.11 - Prob. 36PCh. 4.12 - Prob. 38PCh. 4.12 - Prob. 39PCh. 4.12 - The stereoisomer of cholesterol found in nature is...Ch. 4.12 - Prob. 41PCh. 4.13 - 1-Bromo-2-methylcyclopentane has four pairs of...Ch. 4.13 - Prob. 43PCh. 4.13 - Draw all possible stereoisomers for each of the...Ch. 4.13 - Prob. 45PCh. 4.13 - Of all the possible cyclooctanes that have one...Ch. 4.13 - Prob. 47PCh. 4.13 - Prob. 48PCh. 4.14 - Which of the following compounds has a...Ch. 4.14 - Draw all the stereoisomers for each of the...Ch. 4.15 - Prob. 52PCh. 4.15 - Name the isomers you drew in Problem 52.Ch. 4.15 - Chloramphenicol is a broad-spectrum antibiotic...Ch. 4.15 - Draw a perspective formula for each of the...Ch. 4.15 - Name the following:Ch. 4.15 - Prob. 57PCh. 4.15 - Prob. 59PCh. 4.15 - Convert the perspective formula to a skeletal...Ch. 4.15 - Prob. 62PCh. 4.16 - Prob. 63PCh. 4.17 - Limonene exists as two different stereoisomers....Ch. 4 - a. Draw three constitutional isomers with...Ch. 4 - Prob. 65PCh. 4 - Prob. 66PCh. 4 - Which of the following has an asymmetric center?...Ch. 4 - Prob. 68PCh. 4 - Prob. 69PCh. 4 - Prob. 70PCh. 4 - Prob. 71PCh. 4 - Assign relative priorities to each set of...Ch. 4 - Prob. 73PCh. 4 - Which of the following are optically active?Ch. 4 - Prob. 75PCh. 4 - Name the following:Ch. 4 - Which of the following has an achiral...Ch. 4 - Using skeletal structures, draw the stereoisomers...Ch. 4 - Prob. 79PCh. 4 - Citrate synthase, one of the enzymes in the series...Ch. 4 - Prob. 81PCh. 4 - Prob. 82PCh. 4 - Prob. 83PCh. 4 - Prob. 84PCh. 4 - Prob. 85PCh. 4 - Prob. 86PCh. 4 - Prob. 87PCh. 4 - Prob. 88PCh. 4 - Prob. 89PCh. 4 - a. Draw all the isomers with molecular formula...Ch. 4 - Prob. 91PCh. 4 - Prob. 92PCh. 4 - Draw structures for the following: a....Ch. 4 - For each of the following structures, draw the...Ch. 4 - Prob. 95PCh. 4 - Prob. 96PCh. 4 - Prob. 97PCh. 4 - a. Using the wedge-and-dash notation, draw the...Ch. 4 - Prob. 99PCh. 4 - Prob. 100PCh. 4 - Prob. 101PCh. 4 - a. Draw the two chair conformers for each of the...Ch. 4 - Prob. 103PCh. 4 - Is the following compound optically active?Ch. 4 - Prob. 105P
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