Gibbs Free Energy: Why Must It Be >0 for Reaction?

Thread starter asdf1
Start date Sep 29, 2006
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Energy Free energy Gibbs Gibbs free energy

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Gibbs Free Energy must be greater than zero for a reaction to occur because it indicates that the reaction is non-spontaneous and cannot perform useful work. When Gibbs Free Energy is less than zero, the reaction is spontaneous, releasing energy that can be harnessed. The concept of Gibbs Free Energy is crucial in thermodynamics, as it helps predict the direction of chemical reactions. Understanding this principle is essential for various applications in chemistry and engineering. Overall, Gibbs Free Energy plays a vital role in determining the feasibility of chemical processes.

Sep 29, 2006

asdf1

Why must Gibbs Free Energy >0 for a reaction to occur?

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Sep 29, 2006

Andrew Mason

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asdf1 said:

Why must Gibbs Free Energy >0 for a reaction to occur?

Have a look at http://en.wikipedia.org/wiki/Gibbs_free_energy" which explains the origin of the concept of Gibbs Free Energy. If the Gibbs Free energy is less than 0, the reaction will not result in heat being available to do useful work.

AM

Last edited by a moderator: May 2, 2017

Sep 30, 2006

asdf1

thank you!

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