Entropy

1
Entropy
Entropy is a quantitative measure of the disorder
of an equilibrium thermodynamic state (modern
interpretation)
Entropy is a state function. e.g. the
equilibrium state (p,V,T) has a definite entropy
Entropy differences between any two equilibrium
states (a,b) dont depend on the history.
Change in entropy depends on the flow of heat
during a reversible change of state (classical
interpretation)
occur in thermodynamic systems
Only processes with