An isolated system consisting of two closed subsystems A and B is separated by a diathermal wall.
Question:
An isolated system consisting of two closed subsystems A and B is separated by a diathermal wall. Initially, they are held at temperatures TiA and TiB . Subsystem A contains NA moles of gas. The internal energy of the gas is given by UA = cANARTA, where TA is the temperature of the gas, R is a positive constant and cA is a dimensionless coefficient. Likewise, there are NB moles of gas in subsystem B and the internal energy of the gas is given by UB = cBNBRTB.
a) Determine the change of the internal energy UA due to the thermalisation process.
b) Compare the initial temperature TiB and the final temperature Tf of the system if the size of subsystem B is much larger than that of subsystem A.
Step by Step Answer:
Principles Of Thermodynamics
ISBN: 9781108426091
1st Edition
Authors: Jean-Philippe Ansermet, Sylvain D. Brechet