# Is isothermal expansion reversible?

Is isothermal expansion reversible? Therefore, it is irreversible, as stated first thing in the article. A reversible isothermal expansion is an infinitisimally slow increase in the volume of the substance at constant temperature. What is

## Is isothermal expansion reversible?

Therefore, it is irreversible, as stated first thing in the article. A reversible isothermal expansion is an infinitisimally slow increase in the volume of the substance at constant temperature.

What is difference between reversible and irreversible process?

A reversible process is a change that can be retraced in a reverse (opposite) direction. An irreversible process is a change that cannot be retraced in a reverse (opposite) direction. Reversible changes are very slow and there is no loss of any energy in the process.

Is isothermal free expansion reversible?

Isothermal Irreversible Expansion In other words, in isothermal process ∆T = 0. Free expansion of a gas occurs when it is subjected to expansion in a vacuum (pex=0). During free expansion of an ideal gas, the work done is 0 be it a reversible or irreversible process.

### Why free expansion is irreversible?

The free expansion of a gas is an irreversible process; in principle, the temperature of a gas undergoing a free expansion is not a meaningful quantity. When we talk about an isothermal free expansion of a gas, we mean that the final temperature is the same as the initial temperature.

What is Adiabatic Process? The thermodynamic process in which there is no exchange of heat from the system to its surrounding neither during expansion nor during compression. The adiabatic process can be either reversible or irreversible. The system must be perfectly insulated from the surrounding.

Is ideal gas expansion reversible?

The work of a reversible expansion of an ideal gas is fairly easy to calculate. If the gas expands reversibly, the external pressure (pext) can be replaced by a single value (p) which represents both the pressure of the gas and the external pressure.

#### What is irreversible change give example?

Burning is an example of an irreversible change. When you burn wood you get ash and smoke. You cannot change the ash and smoke back to wood again.

What are examples of reversible and irreversible processes in the real world?

6. 8. 3 Examples of Reversible and Irreversible Processes

• Frictionless movement.
• Restrained compression or expansion.
• Energy transfer as heat due to infinitesimal temperature nonuniformity.
• Electric current flow through a zero resistance.
• Restrained chemical reaction.

Is Joule free expansion reversible?

The Joule expansion (also called free expansion) is an irreversible process in thermodynamics in which a volume of gas is kept in one side of a thermally isolated container (via a small partition), with the other side of the container being evacuated.

## Why free expansion is isothermal process?

For an adiabatic process, in which no heat flows into or out of the gas because its container is well insulated, Q = 0. If there is also no work done, i.e. a free expansion, there is no change in internal energy. For an ideal gas, this means that the process is also isothermal.