Refrigerant 134a (R134a) is at vapor/liquid equilibrium at 300 K. The saturation pressure is 7.0282 bar, the entropy of the saturated liquid is 1.1287 J/(g K) and the entropy of the saturated vapor is 1.7156 J/(g K). If the system has a an entropy of 1.38 J/(g K), what is the quality? (That is, what fraction of the system is vapor?) Report your answer to three decimal places.

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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.