I am confused on when will pressure of two states be the same for a piston cylinder device. Below are two problems where one's final pressure equals the initial pressure and one is not.
The Attempt at a Solution
Initially, I thought a piston-cylinder device will have the same initial pressure and final pressure as long as there is no rigid container or some physical limit that prevent the volume form expanding, if the volume is allowed to change, then when the piston is at rest, it will have the same final pressure as the initial pressure. But after doing some examples, I feel like P_f= P_i is kind rare. so how do you know if the pressure of state 2 is going to change? [/B]
15 KB Views: 764
16.6 KB Views: 668