Entropy #2: The Second Law of Thermodynamics (WWU CHEM 462)

Through a series of examples, this video presents the definition of entropy as a state function, and discusses when, how, and why entropy changes in an isolated system. 0:19 The definition of entropy as a state function 4:35 Confirmation that the entropy of an ideal gas is a state function 12:13 The second law of thermodynamics 12:53 Why entropy increases spontaneously 17:23 Summary of the first two laws of thermodynamics 18:20 How entropy changes in a system and its surroundings 22:08 Takeaway messages