Problem 24P

Analyzing Internally Reversible Processes

A gas within a piston-cylinder assembly undergoes an isothermal process at 400 K during which the change in entropy is −0.3 kJ/K. Assuming the ideal gas model for the gas and negligible kinetic and potential energy effects, evaluate the work, in kJ.

Step 1 of 3:

A piston-cylinder arrangement has an ideal gas. The change in entropy is given for the process. The kinetic and potential energies can be neglected. The process is assumed to be an isothermal process. We are going to find the work done.

The temperature T = 400 K

The change in entropy ΔS = −0.3 kJ/K