Lecture 8--The Relationship Between K and the Gibbs' Free Energy

Lecture 8--The Relationship Between K and the Gibbs' Free Energy

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The Relationship Between K and G 0 Ch 302 B. A. Rowland September 30, 2009
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Outline 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.
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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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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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Lecture 8--The Relationship Between K and the Gibbs' Free Energy

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