One mole of an Ideal Gas with Cv,m= 5R/2 undergoea the transformations described inthe following list from an initial state described by T= 250K andP=1.00 bar. Calculate q, w, delta U, delta H, and delta S for eachprocess.

a. The gas undergoes a reversible adiabatic expansion until thefinal pressure is half its initial value.

b. The gas undergoes an adiabatic expansion against a constantexternal pressure of 0.500 bar until the final pressure is half itsinitial value.

c. The gas undergoes an expansion against a constant externalpressure of zero bar until the final pressure is equal to half ofits initial value.

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## Answers ( 2 )

_{v}?T_{f}=T_{i}(P_{f}/P_{i})^{1-1/?}_{surr}for an adiabatic process is0_{surr}for an adiabaticprocess is 0_{sys}=C_{p}lnT_{2}/T_{1}+ nRlnP_{1}/P_{2}_{v}?T_{sys}=C_{p}lnT_{2}/T_{1}+ nRlnP_{1}/P_{2}Hope this helps!_{f}< T_{i}_{Ur correct that the final temperature in case of anadiabatic process is less than the initial temperature}_{ }T_{f}= T_{I}(P_{f}/ P_{i})^{1-1/?}where^{? = 1 + R / Cv,m}Hope this time it will be correct , go throughthe procedure and plz let me know if u have further problem!