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Chemical energy
Shang-Jung Lee
Created on July 10, 2022
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Transcript
Summary for Chapter 6 Chemical Energy
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3 ways of determining heat of reactions
Bond energies
Hess law
In a lab
2 ways of presenting heat of reactions
In an equation
In an energy diagram
Calculations with energy term in the equation.
Hess's law
Click to watch the videos Click to watch it in full screen. Both types of calculations will lead to the same result.
Example #1
Example #2
Calculations with energy term outside the equation.
What is Hess's law
Example #3
Example #4
Examples
Bond Energy
Click to watch the videos Click to watch it in full screen.
Example #1
Example #2
With the energy bond method, you can determine both heat of reaction and activation energy!