when system is subdivided? Intensive variables: T, P Extensive variables: V, E, H, heat capacity C.
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One mole of an ideal gas initially at 27oC and 1 atm pressure is heated and allowed to expand reversibly at constant pressure until the final temperature is 327oC. For this gas, Cv=20.8 JK-1mol-1 and is constant over the temperature range. (R=0.08206 Latm K-1mol-1 = 8.314 JK-1mol-1 )
(a) Calculate the work w done on the gas in this expansion
(b) What are and for the process ?
(C) What is the amount of heat q absorbed by the gas ?
2. One mole of an ideal gas initially at 300 K is expanded from an initial pressure of 10 atm to a final pressure of 1 atm. Calculate and the final
temperature T2 for this expansion carried out according to each of the following paths. The molar heat capacity at constant volume for the gas is
(a) An isothermal, reversible expansion
(b) An expansion against a constant external pressure of 1 atm in thermally isolated (adiabatic) system
(c) An expansion against zero external pressure in an adiabatic system.