The entropy change for the system during the process in kJ/K is

Question

Common Data for Questions 01 & 02

Nitrogen gas (molecular weight 28) is enclosed in a cylinder by a piston, at the initial condition of 2 bar, 298 K and 1 m³. In a particular process, the gas slowly expands under isothermal condition, until the volume becomes 2m³. Heat exchange occurs with the atmosphere at 298 K during this process.

1. The work interaction for the Nitrogen gas is                                                                                                                               

      (a) 200 kJ                                                           (b) 138.6 kJ

      (c) 2 kJ                                                               (d) –200 kJ

 

       2. The entropy change for the system during the process in kJ/K is                                                                                              

      (a) 0.4652                                                           (b) 0.0067

      (c) 0                                                                    (d) –0.6711