Hess' Law
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Re: Hess' Law
Enthalpy is a state property, meaning that it is not dependent on the path taken to obtain that state, and state properties can be added or subtracted.
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Re: Hess' Law
Since it is a state property, only the final and initial state will matter. This allows us to add and subtract the values of enthalpy.
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Re: Hess' Law
Yes! Because enthalpy is a state property, we can add or subtract the enthalpy changes in order to get to an overall reaction since the path we take to get there doesn't matter.
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Re: Hess' Law
Enthalpy is a state property, so only the final and initial states matter. The process by which you get from an initial state to a final state does not matter for state properties. Therefore, if you want to find the enthalpy value of a reaction through Hess' Law, you can just add the enthalpy values (ensuring that the intermediates cancel out).
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