Organic Chemistry Study Guide and Solutions
6th Edition
ISBN: 9781936221868
Author: Marc Loudon, Jim Parise
Publisher: W. H. Freeman
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Chapter 11, Problem 11.68AP
Interpretation Introduction
Interpretation:
The structures of two isomers of methionine sulfoxide and their stereochemical relationship are to be stated.
Concept introduction:
Sulfides are oxidized rather than carbon when reacted with common oxidizing agents. Sulfides are oxidized into sulfoxides and sulfones. Sulfoxides are obtained by the direct oxidation with one equivalent of hydrogen peroxides and sulfones are obtained by the direct oxidation with two moles of hydrogen peroxide.
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3. Refer to the data below to answer the following questions:
Isoelectric point
Amino Acid
Arginine
10.76
Glutamic Acid
3.22
Tryptophan
5.89
A. Define isoelectric point.
B. The most basic amino acid is
C. The most acidic amino acid is
sidizo zo
3. A gas mixture contains 50 mol% H2 and 50 mol% He.
1.00-L samples of this gas mixture are mixed with
variable volumes of O2 (at 0 °C and 1 atm). A spark is
introduced to allow the mixture to undergo complete
combustion. The final volume is measured at 0 °C and 1
atm. Which graph best depicts the final volume as a
function of the volume of added O2?
(A)
2.00
1.75
Final Volume, L
1.50
1.25
1.00
0.75
0.50
0.25
0.00
0.00
0.25
0.50
2.00
(B)
1.75
1.50
Final Volume, L
1.25
1.00
0.75
0.50-
0.25
0.00
0.75
1.00
0.00
0.25
Volume O₂ added, L
2
0.50
0.75
1.00
Volume O₂ added, L
2
2.00
2.00
(C)
(D)
1.75
1.75
1.50
1.50
Final Volume, L
1.25
1.00
0.75
0.50
Final Volume, L
1.25
1.00
0.75
0.50
0.25
0.25
0.00
0.00
0.00
0.25
0.50
0.75
1.00
0.00
0.25
Volume O₂ added, L
0.50
0.75
1.00
Volume O₂ added, L
2
Leucine is an essential amino acid with the systematic name 2-amino-3-methylpentanoic acid. It has pai
2.36 and pKa2 = 9.60.
H2N-C(R)H-COOH and R is -CH2-CH(CH3)2
A. Draw the condensed structure for leucine, and label all chirality centers with an asterisk.
B. How many possible stereoisomers of leucine are there?
C. Draw a Fischer projection of L-leucine and label the chirality center(s) as R or S.
D. What is the p/ of leucine?
E. Draw the structure of the predominant form of leucine at 10.00.
F.
Draw the structure of the predominant form of leucine at pH = 1.50.
G. Leucine is described as an essential amino acid. What does this mean?
H. Show the alkyl halide you would use to prepare leucine by the amidomalonate method.
=
Chapter 11 Solutions
Organic Chemistry Study Guide and Solutions
Ch. 11 - Prob. 11.1PCh. 11 - Prob. 11.2PCh. 11 - Prob. 11.3PCh. 11 - Prob. 11.4PCh. 11 - Prob. 11.5PCh. 11 - Prob. 11.6PCh. 11 - Prob. 11.7PCh. 11 - Prob. 11.8PCh. 11 - Prob. 11.9PCh. 11 - Prob. 11.10P
Ch. 11 - Prob. 11.11PCh. 11 - Prob. 11.12PCh. 11 - Prob. 11.13PCh. 11 - Prob. 11.14PCh. 11 - Prob. 11.15PCh. 11 - Prob. 11.16PCh. 11 - Prob. 11.17PCh. 11 - Prob. 11.18PCh. 11 - Prob. 11.19PCh. 11 - Prob. 11.20PCh. 11 - Prob. 11.21PCh. 11 - Prob. 11.22PCh. 11 - Prob. 11.23PCh. 11 - Prob. 11.24PCh. 11 - Prob. 11.25PCh. 11 - Prob. 11.26PCh. 11 - Prob. 11.27PCh. 11 - Prob. 11.28PCh. 11 - Prob. 11.29PCh. 11 - Prob. 11.30PCh. 11 - Prob. 11.31PCh. 11 - Prob. 11.32PCh. 11 - Prob. 11.33PCh. 11 - Prob. 11.34PCh. 11 - Prob. 11.35PCh. 11 - Prob. 11.36PCh. 11 - Prob. 11.37PCh. 11 - Prob. 11.38PCh. 11 - Prob. 11.39PCh. 11 - Prob. 11.40PCh. 11 - Prob. 11.41PCh. 11 - Prob. 11.42PCh. 11 - Prob. 11.43PCh. 11 - Prob. 11.44APCh. 11 - Prob. 11.45APCh. 11 - Prob. 11.46APCh. 11 - Prob. 11.47APCh. 11 - Prob. 11.48APCh. 11 - Prob. 11.49APCh. 11 - Prob. 11.50APCh. 11 - Prob. 11.51APCh. 11 - Prob. 11.52APCh. 11 - Prob. 11.53APCh. 11 - Prob. 11.54APCh. 11 - Prob. 11.55APCh. 11 - Prob. 11.56APCh. 11 - Prob. 11.57APCh. 11 - Prob. 11.58APCh. 11 - Prob. 11.59APCh. 11 - Prob. 11.60APCh. 11 - Prob. 11.61APCh. 11 - Prob. 11.62APCh. 11 - Prob. 11.63APCh. 11 - Prob. 11.64APCh. 11 - Prob. 11.65APCh. 11 - Prob. 11.66APCh. 11 - Prob. 11.67APCh. 11 - Prob. 11.68APCh. 11 - Prob. 11.69APCh. 11 - Prob. 11.70APCh. 11 - Prob. 11.71APCh. 11 - Prob. 11.72APCh. 11 - Prob. 11.73APCh. 11 - Prob. 11.74APCh. 11 - Prob. 11.75APCh. 11 - Prob. 11.76APCh. 11 - Prob. 11.77APCh. 11 - Prob. 11.78APCh. 11 - Prob. 11.79APCh. 11 - Prob. 11.80APCh. 11 - Prob. 11.81AP
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