5.3 Hess's Law and Enthalpy of Formation | General Chemistry 

Chad provides a comprehensive lesson on two methods of calculating the Enthalpy of a reaction from thermodynamic data: Hess's Law and Enthalpy of Formation data. Three Hess's Law examples are worked out completely from start to finish. Then an example of calculating Delta H from Enthalpies of Formation is performed as well. Finally, the lesson is concluded by defining what a Formation Reaction is, and how using them is really just a special application of Hess's Law.
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00:00 Lesson Introduction
00:50 Introduction to Hess's Law
03:13 Hess's Law Example #1
12:53 Hess's Law Example #2
19:17 Hess's Law Example #3
24:44 Enthalpy of Formation
29:35 What is a Formation Reaction?
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