Standard Enthalpy of Formation vs Standard Enthalpy of Reaction
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Standard Enthalpy of Formation vs Standard Enthalpy of Reaction
What is the difference between the standard enthalpy of formation and the standard enthalpy of the reaction?
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Re: Standard Enthalpy of Formation vs Standard Enthalpy of Reaction
One key piece of information is that the standard enthalpy of formation is the standard enthalpy of reaction for the formation of one mole of a substance. Therefore, the units on a standard enthalpy of formation will always be in KJ/mol.
You can also refer to this previous post addressing the differences: viewtopic.php?t=345!
You can also refer to this previous post addressing the differences: viewtopic.php?t=345!
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Re: Standard Enthalpy of Formation vs Standard Enthalpy of Reaction
By definition according to Lavelle, standard enthalpy of a reaction occurs when all reactants and products are in their standard states at 1 ATM. It's also known as reaction enthalpy. Standard enthalpy of formation, on the other hand, is the standard reaction enthalpy for the formation of one mole of a substance from its elements in their most stable form.
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Re: Standard Enthalpy of Formation vs Standard Enthalpy of Reaction
To add on to what other posters have replied, standard enthalpy of formation requires that reactants must be at their most stable states.
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