(i) Thermodynamic process : It is defined as a transition by which a state of a system changes from initial equilibrium state to final equilibrium state.
The process is carried out by changing the state functions or thermodynamic variables like pressure, volume and temperature. During the process one or more properties of the system change.
(ii) Types of processes :
- Isothermal process
- Isobaric process
- Isochoric process
- Adiabatic process
- Reversible process
- Irreversible (spontaneous) process.
