Arrhenius equation and activation energies

Arrhenius Equation:

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Jorja De Jesus 2C
Posts: 121
Joined: Sat Jul 20, 2019 12:15 am

Arrhenius equation and activation energies

Postby Jorja De Jesus 2C » Sat Mar 14, 2020 8:31 pm

Does the Arrhenius equation find the activation energy and then could the equation be used on the activation energy? Also what does exp stand for in the Arrhenius equation?

JamieVu_2C
Posts: 108
Joined: Thu Jul 25, 2019 12:16 am

Re: Arrhenius equation and activation energies

Postby JamieVu_2C » Sat Mar 14, 2020 8:42 pm

Referring to homework 7D.1 as an example, the problem gives you 2 rate constants at 2 different temperatures and asks you to find the activation energy. In this case, you would rearrange the Arrhenius equation as a difference of T1 and T2 to get . Then once you plug the values in, you could get the value for Ea. In the constants and equations sheet, exp stands for e^.
Last edited by JamieVu_2C on Sat Mar 14, 2020 8:42 pm, edited 1 time in total.

J Medina 2I
Posts: 102
Joined: Wed Sep 25, 2019 12:17 am

Re: Arrhenius equation and activation energies

Postby J Medina 2I » Sat Mar 14, 2020 8:42 pm

Yes, if given all other information, the Arrhenius equation can be used to find the activation energy, Ea. I think exponential could be referring to when both sides are raised to the power of e which cancels the ln on the left and then raises the right side to the power of e.


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