- #1
DabaDuBa
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Let's assume that we have a non insulated glass container where there is any gas inside.
If the beginning pressure is equal to the atmospheric pressure and then the gas is pressurized at ,say, 3 Bar . Then what kind of process would occur if we let a small amount of gas escape over a very short period of time ?
Please let me know if my thinking is correct :
When the container is opened then clearly work is done ( i.e if we put a light object on the opening,it would move by a certain distance).Therefore the process could be anything but isochoric,right ?
Pressure is also not constant because it becomes smaller by an amount,say, dP.
So the process could either be adiabatic or isothermal,correct ?
dU + dW = dQ so the work done is equal to dP*dV , but we said that the volume is constant so this is where i become confused . And don't forget that the container is not thermally insulated.
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Thanks in advance for your help
If the beginning pressure is equal to the atmospheric pressure and then the gas is pressurized at ,say, 3 Bar . Then what kind of process would occur if we let a small amount of gas escape over a very short period of time ?
Please let me know if my thinking is correct :
When the container is opened then clearly work is done ( i.e if we put a light object on the opening,it would move by a certain distance).Therefore the process could be anything but isochoric,right ?
Pressure is also not constant because it becomes smaller by an amount,say, dP.
So the process could either be adiabatic or isothermal,correct ?
dU + dW = dQ so the work done is equal to dP*dV , but we said that the volume is constant so this is where i become confused . And don't forget that the container is not thermally insulated.
~
Thanks in advance for your help