CHEMISTRY
2nd Edition
ISBN: 9781593995782
Author: OpenStax
Publisher: XANEDU PUBLISHING
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Textbook Question
Chapter 11, Problem 72E
Distinguish between dispersion methods and condensation methods for preparing colloidal systems.
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Consider the following Figure 2 and two atoms that are initially an infinite distance apart, x =00, at which point
the potential energy of the system is U = 0. If they are brought together to x = x, the potential energy is related
to the total force P by
dU
dx
= P
Given this, qualitatively sketch the variation of U with x. What happens at x=x? What is the significance of
x = x, in terms of the potential energy?
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P, Force
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Attraction
Total
Repulsion
x, Distance
Figure 2. Variation with distance of the attractive, repulsive, and total forces between atoms. The
slope dP/dx at the equilibrium spacing xe is proportional to the elastic modulus E; the stress σb,
corresponding to the peak in total force, is the theoretical cohesive strength.
Denote the dipole for the indicated bonds in the following molecules.
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For the SN2 reaction, draw the major organic product and select the correct (R) or (S) designation around the stereocenter
carbon in the organic substrate and organic product. Include wedge-and-dash bonds and draw hydrogen on a stereocenter.
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Chapter 11 Solutions
CHEMISTRY
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Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY