chapter 8 solutions - louisiana tech universityupali/chem120/slides/chapter-8-stoker.pdf ·...
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Chapter 8-1Chemistry 120 Online LA Tech
Chapter 8 Solutions
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Chapter 8-2Chemistry 120 Online LA Tech
Steve Allen/Peter Arnold, Inc.
Water that makes the most common solutions
→ CO 8.1
Ocean water is a solution in which many different substances are dissolved.
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Chapter 8-3Chemistry 120 Online LA Tech
Fig. 8.1
The colored crystals are the solute, and the clear liquid is the solvent. Stirring produces the solution.
Solutions keep properties of both:
Solvent and the solute
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Chapter 8-4Chemistry 120 Online LA Tech
Solutions could be sold solutions
→ Fig. 8.2
Jewelry often involves
solid solutions in
which one metal has
been dissolved in
another metal.
© Coco McCoy/Rainbow
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Chapter 8-5Chemistry 120 Online LA Tech
Solubility is different
Table 8.1
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Chapter 8-6Chemistry 120 Online LA Tech
Saturated solutions
← Fig. 8.3
In a saturated solution,
the dissolved solute is
in dynamic equilibrium
with the undissolved
solute.
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Chapter 8-7Chemistry 120 Online LA Tech
Gas in liquids: solutions
← C.C. 8.1
Carbon dioxide
escaping from an
opened bottle of a
carbonated beverage.
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Chapter 8-8Chemistry 120 Online LA Tech
Concentrated vs. dilute olutions
→ Fig. 8.4
Both solutions contain
the same amount of
solute. A concentrated
solution (left) contains
a relatively large
amount that could
dissolve. A dilute
solution contains a
relatively small amount
of solute compared
with the amount that
could dissolve.
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Chapter 8-9Chemistry 120 Online LA Tech
Ionic solids breaks into ions in solutions
← Fig. 8.5
When an ionic solid,
such as sodium
chloride, dissolves in
water, the water
molecules hydrate the
ions.
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Chapter 8-10Chemistry 120 Online LA Tech
Immiscible liquids can be separated
→ Fig. 8.6
Oil spills can be
contained to some
extent by using
trawlers and a boom
apparatus because oil
and water, having
different polarities, are
relatively insoluble in
each other.
David Woodfall/Getty Images
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Chapter 8-11Chemistry 120 Online LA Tech
Solubility rules for ionic solids
← Table 8.2
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Chapter 8-12Chemistry 120 Online LA Tech
Solubility of vitamins
CC 8.2 Solubility of Vitamins
.
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Chapter 8-13Chemistry 120 Online LA Tech
Total volume don’t add up
Fig. 8.7 When
volumes of two different liquids are combined, the
volumes are not additive.
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Chapter 8-14Chemistry 120 Online LA Tech
Measuring volume of solutions
→ Fig. 8.8
Identical volumetric
flasks are filled to the
50.0-mL mark with
ethanol and with water.
When the two liquids
are poured into a
100mL volumetric
flask, the volume is
seen to be less.
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Chapter 8-15Chemistry 120 Online LA Tech
Orange juice is it a homogenous solutions?
← Fig. 8.9
Frozen orange juice
concentrate is diluted
with water prior to
drinking.
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Chapter 8-16Chemistry 120 Online LA Tech
Concentration of drugs in solution
CC 8.3
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Chapter 8-17Chemistry 120 Online LA Tech
Different types of solutions
CAG 8.1
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Chapter 8-18Chemistry 120 Online LA Tech
Does the light pass through solutions
→ Fig. 8.10
A beam of light travels
through a true solution
without being
scattered. This is not
the case for a colloidal
dispersion.
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Chapter 8-19Chemistry 120 Online LA Tech
Solute lowers the vapor pressure
Fig. 8.11 Close-
ups of the surface of a liquid solvent before and after
solute has been added.
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Chapter 8-20Chemistry 120 Online LA Tech
Solute lowers the freezing point
→ Fig. 8.12
A water-antifreeze
mixture has a higher
boiling point and lower
freezing point than
pure water.
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Chapter 8-21Chemistry 120 Online LA Tech
Solute increase the osmotic pressure
Fig. 8.13
(a) Osmosis can be observed with this apparatus. (b) The
liquid level in the tube rises until equilibrium is reached.
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Chapter 8-22Chemistry 120 Online LA Tech
Semi permeable memebreane only allows the solvent
molecules to pass
Fig. 8.14 Enlarged
views of a semi-permeable membrane separating (a) pure water
and a salt-water solution, and (b) a dilute salt-water solution.
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Chapter 8-23Chemistry 120 Online LA Tech
Osmotic pressure
→ Fig. 8.15
Osmotic pressure is
the amount of pressure
needed to prevent the
solution in the tube
from rising as a result
of the process of
osmosis.
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Chapter 8-24Chemistry 120 Online LA Tech
Water can move up through capillary action
← Fig. 8.16
The dissolved
substances in tree sap
create a more
concentrated solution
than the surrounding
ground water.
John Mead/Photo Researchers
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Chapter 8-25Chemistry 120 Online LA Tech
Would the blood cell survive?
(a) Hyptonic
solution
(b) Crenation in
concentrated
sodium chloride
solution.
(c) Cells neither
swell nor shrink
in physiological
saline solution.
Copyright David M. Phillips/Visuals Unlimited
Figs. 8.17 a-c
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Chapter 8-26Chemistry 120 Online LA Tech
Three types of solutions
Table 8.3
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Chapter 8-27Chemistry 120 Online LA Tech
Colligative properties of solutions
CAG 8.2
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Chapter 8-28Chemistry 120 Online LA Tech
How does dialysis work?
Fig. 8.18 In
dialysis, there is a net movement of ions from a region of
higher concentration to a region of lower concentration.
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Chapter 8-29Chemistry 120 Online LA Tech
Removing impurities through dialysis
→ Fig. 8.19
Impurities can be
removed from a
colloidal dispersion by
using a dialysis
procedure.
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Chapter 8-30Chemistry 120 Online LA Tech
Dialysis machine a life saver
→ CC 8.4