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Gibb’s Free Energy


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The Gibbs function is a Legendre Transformed of the internal energy function, G=U-TS+PV where the the extensive variables, entropy and volume, are replaced by their corresponding intensive variables, temprerature and pressure, respectively.

 

Its differential: dG=-S dT + V dP + mu dN

 

Hope this helps.

Nicolas.

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Gibbs free energy combines both entropy and enthalpy values in the equation....

 

[math]G =H-TS[/math]

 

If the value comes out greater than 0, the reaction is thought to be feasible.

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what about deltaS and deltaH, dont those factor in somewhere?

 

Yea your right, my mistake

 

it should be.....

 

[math]\Delta G = \Delta H - T \Delta S[/math] at standard conditions.

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