The study of how energy effects a macroscopic system
Define a state function and give rule for determining extensive vs intensive properties. How many state properties are needed to define a system state. How are extensive and intensive properties related
State function: any 3 states that define a system. One must be extensive
Rule: imagine an exact duplicate of a system. Then add them together. If the property changes, it is extensive
Think of fluid because it is heat. Then compare to a concentration gradient. Heat flows from hot to cold and can do work. Cold heat must have work done on it to move from cold to hot
What are the 7 thermodynamic state functions
Remember Gibb Has to Pee S T U V
1: Gibbs free energy
2: Enthalpy
3: Pressure
4: Enthalpy
5: Temperature
6: Internal Energy (U)
7: Volume
What are the 6 types of internal energy, which ones are in the sub category Thermal Energy
1: rotational
2: Translational
3: Vibrational
4: Intermolecular Potential
5: Electronic
6: Great Mass
Thermal Energy: 1-3
What is the average kinetic energy of any fluid
3/2KT
Define Enthalpy. Define Change in Enthalpy
H=U+PV
ΔH=ΔU+ΔPV p must be constant
Define a standard state and standard Enthalpy of Formation
Standard state: the reference enthalpy value of 0 for any substance. A substance exists in this state at 1 Barr and some specific temp.
Standard Enthalpy of Formation: the change in H for a rxn that creates 1 mole of a compound from raw elements in their standard state
Define Hess's Law and what negative and positive values mean