Organic Chemistry - With Access (Custom)
9th Edition
ISBN: 9781337031745
Author: McMurry
Publisher: Cengage
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Chapter 3.SE, Problem 52AP
Increased substitution around a bond leads to increased strain. Take the four substituted butanes listed below, for example. For each compound, sight along the C2-C3 bond and draw Newman projections of the most stable and least stable conformations. Use the data in Table 3-5 to assign strain-energy values to each conformation. Which of the eight conformations is most strained? Which is least strained?
(a) 2-Methylbutane
(b) 2,2-Dimethylbutane
(c) 2,3-Dimethylbutane
(d) 2,2,3-Trimethylbutane
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My question is whether HI adds to both double bonds, and if it doesn't, why not?
Strain Energy for Alkanes
Interaction / Compound kJ/mol kcal/mol
H: H eclipsing
4.0
1.0
H: CH3 eclipsing
5.8
1.4
CH3 CH3 eclipsing
11.0
2.6
gauche butane
3.8
0.9
cyclopropane
115
27.5
cyclobutane
110
26.3
cyclopentane
26.0
6.2
cycloheptane
26.2
6.3
cyclooctane
40.5
9.7
(Calculate your answer to the nearest 0.1 energy unit, and be sure to specify units, kJ/mol or kcal/mol. The answer is case
sensitive.)
H.
H
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A certain half-reaction has a standard reduction potential Ered +1.26 V. An engineer proposes using this half-reaction at the anode of a galvanic cell that
must provide at least 1.10 V of electrical power. The cell will operate under standard conditions.
Note for advanced students: assume the engineer requires this half-reaction to happen at the anode of the cell.
Is there a minimum standard reduction
potential that the half-reaction used at
the cathode of this cell can have?
If so, check the "yes" box and calculate
the minimum. Round your answer to 2
decimal places. If there is no lower
limit, check the "no" box..
Is there a maximum standard reduction
potential that the half-reaction used at
the cathode of this cell can have?
If so, check the "yes" box and calculate
the maximum. Round your answer to 2
decimal places. If there is no upper
limit, check the "no" box.
yes, there is a minimum.
1
red
Πν
no minimum
Oyes, there is a maximum.
0
E
red
Dv
By using the information in the ALEKS…
Chapter 3 Solutions
Organic Chemistry - With Access (Custom)
Ch. 3.1 - Prob. 1PCh. 3.1 - Prob. 2PCh. 3.1 - Identify the functional groups in the following...Ch. 3.2 - Draw structures of the five isomers of C6H14.Ch. 3.2 - Propose structures that meet the following...Ch. 3.2 - Prob. 6PCh. 3.3 - Draw the eight 5-carbon alkyl groups (pentyl...Ch. 3.3 - Identify the carbon atoms in the following...Ch. 3.3 - Prob. 9PCh. 3.3 - Prob. 10P
Ch. 3.4 - Give IUPAC names for the following compounds:Ch. 3.4 - Prob. 12PCh. 3.4 - Name the eight 5-carbon alkyl groups you drew in...Ch. 3.4 - Give the IUPAC name for the following hydrocarbon,...Ch. 3.7 - Make a graph of potential energy versus angle of...Ch. 3.7 - Sight along the C2-C1 bond of 2-methylpropane...Ch. 3.7 - Sight along the C2-C3 bond of 2,3-dimethylbutane,...Ch. 3.7 - Draw a Newman projection along the C2-C3 bond of...Ch. 3.SE - Prob. 19VCCh. 3.SE - Prob. 20VCCh. 3.SE - Draw a Newman projection along the C2-C3 bond of...Ch. 3.SE - Prob. 22APCh. 3.SE - Prob. 23APCh. 3.SE - Propose structures for the following: (a) A...Ch. 3.SE - Prob. 25APCh. 3.SE - Draw the structures of the following molecules:...Ch. 3.SE - Draw structures that meet the following...Ch. 3.SE - Prob. 28APCh. 3.SE - In each of the following sets, which structures...Ch. 3.SE - There are seven constitutional isomers with the...Ch. 3.SE - Prob. 31APCh. 3.SE - Draw compounds that contain the following: (a) A...Ch. 3.SE - Prob. 33APCh. 3.SE - Draw and name all monochloro derivatives of...Ch. 3.SE - Draw structures for the following: (a)...Ch. 3.SE - Prob. 36APCh. 3.SE - Draw a compound that: (a) Has nine primary...Ch. 3.SE - Give IUPAC names for the following compounds:Ch. 3.SE - Name the five isomers of C6H14.Ch. 3.SE - Explain why each of the following names is...Ch. 3.SE - Prob. 41APCh. 3.SE - Consider 2-methylbutane (isopentane). Sighting...Ch. 3.SE - What are the relative energies of the three...Ch. 3.SE - Construct a qualitative potential-energy diagram...Ch. 3.SE - Prob. 45APCh. 3.SE - Draw the most stable conformation of pentane,...Ch. 3.SE - Draw the most stable conformation of...Ch. 3.SE - Prob. 48APCh. 3.SE - Prob. 49APCh. 3.SE - Formaldehyde, H2C=O, is known to all biologists...Ch. 3.SE - Prob. 51APCh. 3.SE - Increased substitution around a bond leads to...Ch. 3.SE - Prob. 53APCh. 3.SE - In the next chapter we'll look at...Ch. 3.SE - We’ll see in the next chapter that there are two...
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