Question

An ideal gas is kept in a 5 litre cylinder at a pressure of 15 atm. in 30 minutes the gas is allowed to enter slowly into an evacuated vessel of 500 l capacity. total work done during the process of expansion is

Answer 1

No work is done during free expansion of an ideal gas whether the process is reversible or irreversible.

W = -p × ∆V

= 0 × ∆V

= 0

Answer 2

No work is done during free expansion of an ideal gas whether the process is reversible or irreversible.

Formula for work done is

W=-p×∆V

=0×∆V

W=0

Total work done during the expansion is 0