CH20_over - CHAPTER 20 Gibbs Free Energy G G(T P = H(T P T...

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CHAPTER 20 - Gibbs Free Energy Δ G Δ G ( T , P ) H ( T , P ) T Δ S ( T , P ) 1. Temperature Dependence Δ H , Δ S change little with T => Δ G ( T , P = 1 bar) G o ( T ) ≈Δ H o T Δ S o 2. Pressure (Gas), Concentration Dependence Δ G ( T , P ) G o ( T ) + RT ln Q At equilibrium Δ G = 0, Q = K eq => Δ G o ( T ) =− RT ln K eq 3. Spontaneous: Δ G <0 →Δ G = 0 Nonspontaneous: Δ G >0 G = 0 System moves in direction of decreasing
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This note was uploaded on 04/13/2010 for the course CHEM 114 taught by Professor Jursich during the Spring '08 term at Ill. Chicago.

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