P21_052 - S = S = nR ln 2, is also independent of T . Here...

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52. The change in entropy for the ideal gas is found from Eq. 21-2, Eq. 20-14, and the Frst law of thermo- dynamics (using the fact that ∆ E int = 0 for an ideal gas isothermal process). S = Q T = W T = nRT T ln µ V f V i = nR ln 2 , which is independent of the temperature T of the reservoir. Thus the change in entropy of the reservoir,
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Unformatted text preview: S = S = nR ln 2, is also independent of T . Here we noticed that the net change in entropy for the entire system (the ideal gas plus the reservoir) is S total = S + S = 0 for a reversible process so S = S ....
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.

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