PH313 Thermodynamics

Review topics for exam #3

• Entropy
• Entropy change for various reversible processes
• Entropy change for irreversible processes
• Entropy and heat
• Entropy and the 2^nd law
• Entropy and the arrow of time
• Entropy as state variable
• Microscopic view of entropy, order, number of mincrostates, S=k ln(omega)
• Free energies
• Internal energy = U, Gibbs function =G, enthalpy=H
• Natural independent variables for each, and exact differentials
• When is each conserved
• Derive Maxwell’s relations and other relationships from their differentials
• Maxwell’s relations
• Deriving
• Using
• Knowing they are amazing
• Phase Transitions
• What quantities are constant, what quantities change?
• What quantities are discontinuous? Infinite?
• 1^st order, 2^nd order and lambda transitions
• latent heat or enthalpy of transformation
• relation between T and P of phase transition
• phase diagrams
• T-S and P-V diagrams for phase transitions
• Gibbs function as function of T and P for phase transition
• Memory wire
• Behavior as function of temp, stress
• Martensite-austenite transformation not a phase transition