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Thermodynamic functions in free expansion

Page history last edited by Joe Redish 5 years, 2 months ago

7.3.3.P11

 

Suppose an isolated box of volume 2V is divided into two equal compartments. An ideal gas occupies half of the container and the other half is empty as in the figure at the left. The partition separating the two halves of the box is removed (simply pulled out) and the system reaches equilibrium again as in the figure at the right.

For each of the following quantities, indicate how the result of removing the partition (and letting the gas come to equilibrium again) changes each of the following quantities. Put I (for increases), D (for decreases), S (for stays the same), or N (for there is not enough information to decide). In each case, explain your reasoning.

 

  1. The temperature
  2. The internal (thermal) energy
  3. The entropy
  4. The enthalpy
  5. The Gibbs's free energy

 

 

Bill Dorland 3/2/18 

 

 

 

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