Standard reaction Enthalpy Vs Enthalpy of Formation

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Johnny Yu
Posts: 19
Joined: Fri Sep 25, 2015 3:00 am

Standard reaction Enthalpy Vs Enthalpy of Formation

Postby Johnny Yu » Sun Jan 10, 2016 4:17 pm

May someone please explain the difference between the Standard Reaction Enthalpy and Standard Enthalpy of Formation to me? I don't understand what Reaction Enthalpy is. Thank you!

Chiara R 1K
Posts: 22
Joined: Fri Sep 25, 2015 3:00 am

Re: Standard reaction Enthalpy Vs Enthalpy of Formation

Postby Chiara R 1K » Sun Jan 10, 2016 4:26 pm

From what I understand, I think standard reaction enthalpy is the ΔHo (amount of heat released in a reaction at a constant pressure) for any reaction that has reactants and products in their standard state at 1 atm, and is measured in kJ. Standard Enthalpy of formation, (ΔHfo) is the standard reaction enthalpy in a reaction that makes one mole of a certain substance, and is thus measured in kJ/mol.


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