Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Can you help me correcting this:
NOTE: 3b, not principally. You've got an -O-H group attracted to another -O-H group - what type of IMF is this? Also, in 3c, it is not hydrogen bonds that align the hydrocarbon "tails" of the molecules; what is the IMF here?
Transcribed Image Text:3. A drop of stearic acid, when placed on the surface of a dish
of water, will form a monolayer (a single layer of stearic acid
molecules). Make a sketch of the water/stearic acid
interface, showing (a) how the stearic acid molecule orients
itself with respect to the water's surface, (b) the
intermolecular forces that allow the stearic acid to maintain
that orientation with the water, and (c) the other IMF that
allow the stearic acid molecule to maintain its orientation
with other stearic acid molecules. Instead of drawing the
stearic acid using the structural formula to the right, use the one below. Figures 13.8
and 13.10 in the textbook may be helpful.
a)
HO
↓
Carboxyl Group
(Polar)
m
Hydrocarbon chain
(Non-polar)
when the stearic acid is added to the water,
the hydrocarbon chain point away from the water
NO HO HO because is nonpolar while the carboxyl group
HO
19
1₂0 11₂0
is dissolving in the water because is polar,
fu
-i-OH
CH3(CH₂)16-C-OH
-) Because carboxyl group of stearic acid is polar and the water
intermolecolar force between them is
the
is polar the
dipole -dipole force.
between them
thom is
The other intermolecular force
hydrogen bond that allow
the stearic acid
that orientation with othe steane acid molecules.
the
to maintain
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