PLB 300 Lecture Notes - Lecture 3: Gibbs Free Energy, Vaporization, Ideal Gas
Document Summary
Phase diagrams: phase diagrams: phases and phase equilibria as a function of temperature and pressure. 7. 4 enthalpy: enthalpy: potential energy of a system found in intermolecular attractions/chemical bonds. Standard heat of formation: standard enthalpy of formation: enthalpy required to produce one mole of a compound from its elements in their standard states. Bond dissociation energy: hess"s law: bond enthalpies, called bond dissociation energy, bond dissociation energy: average e required to break a specific bond between atoms in gas phase (endothermic) Standard heat of combustion: enthalpy change associated with fuel combustion. 7. 5 entropy: entropy: disorder, measure of the degree to which energy has been spread throughout a system or between a system and its surroundings, entropy ratio of heat transferred per mole per unit kelvin, maximized at equilibrium. Standard gibbs free energy: free energy change of reactions: measured under standard state conditions to yield the standard free energy. Applications: average molecular speeds, boltzmann constant: 1. 38 x 10^-23 j/k.
