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Additional Problems Chapter 2
| 1. A sample of 1.0 mol of perfect gas with Cp,m =
7/2R, initially at a pressure of 1.00 atm and a temperature of 298
K, is put through he following cycle: (a) constant-volume heating to
twice its initial pressure, (b) reversible, adiabatic expansion back to its
initial temperature, (c) reversible isothermal compression back to 1.00 atm.
Calculate q, w, DU and DH
for each step and overall. |
Answer: step (a), q = DU =
6.19 kJ, DH = 8.67 kJ
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