First Law of Thermodynamics Energy

[205873468]

Within the context of the First Law of Thermodynamics, can someone help explain how energy is accounted for in reversible processes, especially between reversible and irreversible work?

[906013563]

For reversible processes, the system is in thermodynamic equilibrium with its surroundings at all stages of the process. The work done by or on the system can be reversed by an infinitesimal change in conditions. In a reversible process, the work is done in such a way that the system always remains in equilibrium with its surroundings. Irreversible work, on the other hand, is done when a system is not in equilibrium with its surroundings. It typically involves non-ideal, real-world processes that happen at a finite rate