Standard Gibbs Free Energy of Activation

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Sylvester_Foley_3G
Posts: 11
Joined: Wed Sep 21, 2016 2:59 pm

Standard Gibbs Free Energy of Activation

Postby Sylvester_Foley_3G » Tue Mar 07, 2017 12:34 am

Hello,

I was just wondering why the Standard Gibbs Free Energy of Activation is always going to be a positive value?

Thank you in advance,
Sylvester

Joyce Wu 3E
Posts: 21
Joined: Fri Jul 22, 2016 3:00 am
Been upvoted: 2 times

Re: Standard Gibbs Free Energy of Activation

Postby Joyce Wu 3E » Tue Mar 07, 2017 1:59 am

The standard Gibbs energy difference between the transition state of a reaction and the ground state of the reactants. Because it usually takes energy for the reaction to happen (energy will be used to break the molecular bonds of the reactants), the gibbs free engery of activation will be positive. It is rare for reactants to need a to expend energy for a reaction to occur.

Josh Moy 1H
Posts: 58
Joined: Thu Jul 13, 2017 3:00 am

Re: Standard Gibbs Free Energy of Activation

Postby Josh Moy 1H » Tue Mar 13, 2018 8:30 pm

because you need energy for the reaction to happen


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