A real gas is changed slowly from state 1 to state 2.During this process no work is done on or by the gas.This process must be:
A)isothermal
B)adiabatic
C)occurring at constant volume
D)occurring at constant pressure
E)a closed cycle with point 1 coinciding with point 2

Question

Quizplus · Accepted Answer

If no work is done on or by the gas, the process must occur at constant volume, since work done by a gas is given by $W = P\Delta V$, where $P$ is pressure and $\Delta V$ is the change in volume. If $\Delta V = 0$, then $W = 0$.

A Real Gas Is Changed Slowly from State 1 to State