Question

What is free expansion of ideal gas?

Answer 1

Answer:

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

Answer 2

The 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.

Free expansion of a gas occurs when it is subjected to expansion in a vacuum $(p_{ex}=0)$ . During free expansion of an ideal gas, the work done is 0.