Solution Cont. Isothermal process for ideal gas,(n=1) Q-02+03-Q:-Wj-nRr 2m3 =500mol×8.3145J/molK)×144.26K×ln 5.906m3 =-649.4kJ Rejecting heat 5 r=+形：go品片 3,V3 3 =500mol×号×8.3145J/mol.K)×(298-144.26)K+(-649.4)k =309.3kJ 上游究通大学 March 23,2018 15 SHANGHAI JLAO TONG UNIVERSITYMarch 23, 2018 15 Isothermal process for ideal gas, (n=1) 3 1 2 2 3 2 3 2 3 2 ln V Q Q Q Q W nRT V          Rejecting heat   2 1 3 1 2 2 3 2 ln 1 n T T R V W W W nRT k V         3 3 2 m 500 mol 8.314 5 J/(mol K) 144.26 K ln 5.906 m 649.4 kJ           3 500 mol 8.314 5 J/(mol K) 298 144.26 K 649.4 kJ 2 309.3 kJ          0 Solution Cont. 5 3