Reversible process

Definition

A reversible process is a thermodynamic process that can be reversed without leaving any net change in either the system or the surroundings. These processes are ideal and occur infinitesimally slowly, allowing the system to remain in equilibrium throughout.

5 Must Know Facts For Your Next Test

1. Reversible processes are idealized and do not occur naturally; they serve as a model for real-world processes.
2. In a reversible process, the system is always in thermodynamic equilibrium with its surroundings.
3. The work done by or on the system during a reversible process is maximized compared to irreversible processes.
4. Reversible processes are used to define state functions like entropy and to derive equations such as those for Carnot engines.
5. Heat transfer in a reversible process occurs with an infinitesimal temperature difference.

Review Questions

• What distinguishes a reversible process from an irreversible one in terms of equilibrium?
• Why is the work done during a reversible process greater than that in an irreversible process?
• How does heat transfer occur in a reversible process?

Related terms

Irreversible Process:

A thermodynamic process that results in a net change in the system and surroundings and cannot be reversed exactly.

Carnot Cycle: An idealized thermodynamic cycle consisting of two isothermal processes and two adiabatic processes, all of which are reversible.

$Entropy$: $A$ measure of disorder or randomness in a system, which increases in an irreversible process but remains constant in a perfectly reversible one.