Lecture Notes for CHEM 3410 - PHYSICAL CHEMISTRY I with Richard at The Richard Stockton College of New Jersey (StoCo)

Notes Information

Material Type:Class Note
University:The Richard Stockton College of New Jersey
Term:Fall 2008
  • Gibbs Free Energy
  • Natural Sciences
  • Constant Temperature
  • Free Energy
  • Macroscopic
  • State Function
  • Spontaneous
  • Temperature
  • Consideration
  • Chemical Reaction
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The Richard Stockton College of New Jersey Chemistry Program, School of Natural Sciences and Mathematics PO Box 195, Pomoma, NJ CHEM 3410: Physical Chemistry I | Fall 2008 October 1, 2006 Lecture 13: Gibbs Free Energy & Equilibrium References 1. Brady, Physical Chemistry, Sections 4.1{4.5 Key Concepts Last time we developed a new function, the Gibbs Free Energy (G(T;P)), a new thermodynamic energy function that was minimized at equilibrium under constant pressure and temperature conditions. G = U TS +PV Using our de nition of enthalpy (H = U+PV) we can write G = H TS. If we look a small changes in G at constant temperature, this reduces to dG = dH TdS. For macroscopic changes we can integrate this to give us an expression that looks very familiar: G = H T S A similar derivation is possible under conditions of constant V and T, which yields the Helmholtz Free Energy (A(V;T) in our book): A = U TS dA = TdS PdV From these new functions, we can develop additional expression by compar...

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