Lab tomorrow Deals with colligative properties of solutions

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Lab tomorrow Deals with colligative properties
of solutions A look at the physical properties
(freezing pt, boiling pt) of a solution that
contains some impurities. Freezing point
depression
Salt on roads in the winter. Causes freezing
point to be lower.
Two chapters left Chapter 13 and 16
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Section 13.6 Colligative Properties
The presence of solute particles in a solution
makes the physical properties of a
solution different from those of the pure
solvent. solvent the most abundant component
of a given solution (Ex H2O) solute the
component dissolved in the solution (Ex Ca2 ,
CO32-)
It is the of solute particles that matters, NOT
their chemical identity. Recall from Chapter 4
An electrolyte solute separates into ions
as it dissolves An nonelectrolyte solute
does not dissolve into ions An aqueous 0.50 m
C6H12O6 solution (nonelectrolyte) should have the
same freezing point as an aqueous 0.25 m NaCl
(electrolyte) solution.
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Section 13.6 Using Colligative Properties to
Find Solute Molar Mass
?Tf i (Kf m)