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The Relationship Between K
and
∆
G
0
Ch 302
B. A. Rowland
September 30, 2009
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•
There is a fundamental connection
between the equilibrium constant (K) and
the Gibbs’ Free Energy (
∆
G
0
).
•
Today, we will explore that relationship.
•
We will also explore the relationship
between pressure and Q.
The Gibbs’ Free Energy:
A
Review
•
∆
G is the measure of a process’ spontaneity.
•
Remember that if
∆
G is:
–
Positive the reaction will not occur (non
spontaneous).
–
Zero the reaction will be at equilibrium.
–
Negative the reaction will occur (spontaneous).
•
∆
G
0
is the change in the free energy that
occurs if reactants in their standard states (1
atm for gases and 1 M for solutions) are
converted to products in their standard
states.
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View Full Document The Relationship Between
∆
G
0
and
K
•
∆
G
0
is the standard Gibbs’ Free Energy in J K
1
mol
1
.
•
R is the ideal gas constant (8.3145 J K
1
mol
1
).
•
T is the temperature in K.
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This note was uploaded on 01/30/2010 for the course GOV 312L taught by Professor Madrid during the Fall '07 term at University of Texas at Austin.
 Fall '07
 Madrid

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