Standard Gibbs Free Energy of Activation

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Rachel Kipp 1I
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Joined: Wed Sep 21, 2016 2:55 pm

Standard Gibbs Free Energy of Activation

Postby Rachel Kipp 1I » Thu Mar 09, 2017 10:53 am

Why is standard Gibbs free energy of activation always a positive value, in terms of conceptual understanding?

Justin_Yi_1J
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Re: Standard Gibbs Free Energy of Activation

Postby Justin_Yi_1J » Thu Mar 09, 2017 11:10 am

In order to bring reactants together to undergo a chemical reaction, energy must be put into the system to do the work necessary to perform the reaction. Gibbs free energy is a measure of the energy in a system that is available to do work. A system must gain energy to do the work of the reaction, so the Gibbs free energy of activation must be positive.


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