A tank is perfectly insulated and divided into two parts by a membrane. The first part occupies 5 m3 volume containing air at 100 kPa pressure and 300 K temperature and the second one 2 m3 air at 2 MPa and 300k. The membrane suddenly raptures somehow, and then thermodynamic equilibrium is established. (a) Find the final temperature, pressure and entropy change of air, (b) Calculate the entropy generation during this process.

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Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.