The Partition Function: Connecting Molecules to Thermodynamics
Physical Chemistry · Statistical The Partition Function: Connecting Molecules to Thermodynamics One quantity that, once known, yields every thermodynamic property of the system. Understanding what it counts is more useful than memorising the formulas it generates. BSc & MSc · Physical Chemistry · Concept The short answer: The partition function sums a Boltzmann factor over every accessible state, so it measures how many states are effectively available at a given temperature. Energy, entropy and free energy all follow from it by differentiation, which is why it is the bridge between molecular properties and bulk thermodynamics. The definition and what it…