Entropy change definition of entropy change 4s=s-=(9) T △S=S2-S1=0.4kJ/K int rev Irreversible process or T int rev Reversible Specific form of entropy:s= process int rev 0.3 0.7 S,kJ/K Units in SI for specific entropy are kJ/kg K,kJ/kmol-K Entropy is property:AS between two states is same for all process both reversible and irreversible 上游通大学 Apr/10,Mon,2017 9 SHANGHAI JLAO TONG UNIVERSITYApr/10, Mon, 2017 9 Entropy change definition of entropy change Units in SI for specific entropy are kJ/kg·K, kJ/kmol·K or Specific form of entropy: int rev q ds T         Entropy is property: ∆S between two states is same for all process both reversible and irreversible