Arrhenius equation

Arrhenius Equation:

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Hanniel U 2B
Posts: 76
Joined: Fri Sep 28, 2018 12:16 am

Arrhenius equation

Postby Hanniel U 2B » Sat Mar 16, 2019 11:12 pm

How is Enthalpy or delta H related to Activation energy, Ea in the Arrhenius equation?

WilliamNguyen_4L
Posts: 65
Joined: Fri Sep 28, 2018 12:28 am

Re: Arrhenius equation

Postby WilliamNguyen_4L » Sat Mar 16, 2019 11:14 pm

I don't think they are related. Delta H is a state function that just refers the the final and initial enthalpy values. The activation energy in the Arrhenius equation has to do with the pathway of the reaction.

Chem_Mod
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Re: Arrhenius equation

Postby Chem_Mod » Sat Mar 16, 2019 11:16 pm

Activation energy is the delta G value between a reactant and a transition state. So you could say that the delta G for the overall reaction = delta H of the reaction - T*(delta S of the reaction). But otherwise, there isn't an equation which relates the activation energy and delta H. :)


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