Chemistry
13th Edition
ISBN: 9781260162370
Author: Chang
Publisher: MCG
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Chapter 5.8, Problem 2RCF
Interpretation Introduction
Interpretation:
The pressure of methane gas has to be determined using the van der Waals equation.
Concept Introduction:
Van der Waals equation:
We find the pressure by first solving algebraically for
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It is not unexpected that the methoxyl substituent on a cyclohexane ring
prefers to adopt the equatorial conformation.
OMe
H
A G₂ = +0.6 kcal/mol
OMe
What is unexpected is that the closely related 2-methoxytetrahydropyran
prefers the axial conformation:
H
H
OMe
OMe
A Gp=-0.6 kcal/mol
Methoxy: CH3O group
Please be specific and clearly write the reason why this is observed. This effect that provides
stabilization of the axial OCH 3 group in this molecule is called the anomeric effect. [Recall in the way of
example, the staggered conformer of ethane is more stable than eclipsed owing to bonding MO
interacting with anti-bonding MO...]
206 Pb
82
Express your answers as integers. Enter your answers separated by a comma.
▸ View Available Hint(s)
VAΣ
ΜΕ ΑΣΦ
Np, N₁ = 82,126
Submit
Previous Answers
?
protons, neutrons
Please draw the inverted chair forms of the products for the two equilibrium reactions
shown below. Circle the equilibrium reaction that would have a AG = 0, i.e., the relative energy of
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requirement to show or do calculations.]
CH3
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HH
CH3
1
-CH3
Chapter 5 Solutions
Chemistry
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