Standard Gibbs Free Energy






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Hellen Truong 2J
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Standard Gibbs Free Energy

Postby Hellen Truong 2J » Thu Feb 15, 2018 3:50 pm

Can it be considered standard Gibbs free energy if it is given for a temperature other than 25C?

Sarah_Stay_1D
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Re: Standard Gibbs Free Energy

Postby Sarah_Stay_1D » Thu Feb 15, 2018 4:35 pm

Hellen Truong 2J wrote:Can it be considered standard Gibbs free energy if it is given for a temperature other than 25C?


The measured standard Gibbs free energy values in our textbook are all for 25 degrees Celsius. If you calculate the Gibbs free energy for a system not at standard temperature, then you do not have the *standard* Gibbs free energy anymore, just ΔG .

Johann Park 2B
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Re: Standard Gibbs Free Energy

Postby Johann Park 2B » Thu Feb 15, 2018 4:43 pm

Standard Gibbs Free Energy entails 1 bar of pressure and a specified temperature (in this case being 25oC (298 K)). Otherwise, it should be noted as just a "Gibbs Free Energy" value.

Amanda Wu 2C
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Re: Standard Gibbs Free Energy

Postby Amanda Wu 2C » Thu Feb 15, 2018 8:31 pm

Standard Gibbs Free Energy (delta G naught) is given under standard conditions where temperature is 25 degrees Celsius. Given for other temperatures, it would just be Gibbs Free Energy (delta G).


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