Question

One mole of an ideal gas having volume 100 cc, pressure 1 atm and temperature 100ºC undergoes a cyclic process. The net internal energy change in one cycle is
Zero

40 J

10 J

Insufficient information

Answer 1

$\huge \tt zero$

Answer 2

Answer:

The net internal energy change in one cycle will be equal to zero.

Therefore, the option (1) is correct.

Explanation:

• Internal energy is the energy posses because of volume , temperature, pressure and chemical composition.
• The internal energy of a system depends only upon the state of the system. Internal energy of the system is only determined by the state of the system not by the path followed by the system.
• Consider that if  $U_{A}$ is the internal energy of state A  and $U_{B}$ is the internal energy of state B, then the change in the internal energy:

          $\triangle U= U_{B}-U_{A}$

       For the cyclic process, $U_{A}=U_{B}$

          $\int\limits^A_B {} \, dU = \triangle U=0$

Therefore, the ideal gas undergoes a cyclic process, net internal energy change in one cycle is equal to zero.