Chemical Thermodynamics 4.9 - Reversible Entropy (Old Version)

From a channel Lumen includes in full: TMP Chem posts free university-level courses in physical, quantum and computational chemistry (thermodynamics, kinetics, Hartree-Fock), organised as numbered lessons.

A 5-minute video from TMP Chem's catalogue; the title names its topic.

Video by TMP Chem, played through YouTube's embedded player.