How to calculate enthalpy changes without measuring every single reaction
In short: This video introduces Hess's law, a fundamental principle of thermodynamics that allows chemists to determine the total enthalpy change of a reaction by summing the changes of its individual steps.
The video explores the concept of enthalpy change and how it functions as a state function. Because enthalpy is independent of the pathway taken, the net change in a chemical system depends only on the initial and final states, not the specific sequence of intermediate reactions used to get there.
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Sources
- Summary by Intellect · source: Hess's law | Thermodynamics | AP Chemistry | Khan Academy
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