Dissipative work is used to address some textbook definitions of heat capacity at constant volume C V and at constant pressure C P. It is shown that dissipative work should be accounted for when this topic is presented to the students, so that all C V (and C P ) definitions are equivalent, instead of imposing unnecessary restrictions on thermodynamic processes. Finally, one simple but illustrative example is given. This work is also relevant from a didactic and pedagogical standpoint, since it helps dispel some misunderstandings related to the concepts outlined herein.
- dissipative work
- heat capacity