This video commences by reviewing previously introduced types of enthalpy changes and how these are related to a reaction’s spontaneity. Then, the concept of entropy, its formula, and the various factors that affect it are discussed. Lastly, Gibbs free energy and its formulae are introduced as a measure of spontaneity, followed by the exploration of how its value changes with different values of enthalpy and entropy. 00:00 Introduction 00:22 Review of Enthalpy Changes 00:36 Spontaneity 00:58 Entropy 01:26 Standard Entropy Change 03:10 Example Question 03:49 Universal Entropy 04:46 Preview finished! ~~~~~~~ Our website: https://tibertutor.com/ Our membership plans: https://tibertutor.com/#plans/ ~~~~~~~ Our IB Biology Resources: https://tibertutor.com/ib-biology/ Our IB Chemistry Resources: https://tibertutor.com/ib-chemistry/ Our IB Physics Resources: https://tibertutor.com/ib-physics/ ~~~~~~~ Our Instagram: / tibertutor Our Facebook: / tibertutor