Elements with Gibbs Free Energy

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Xuan Kuang 2L
Posts: 31
Joined: Wed Nov 14, 2018 12:23 am

Elements with Gibbs Free Energy

Postby Xuan Kuang 2L » Sun Feb 17, 2019 9:43 pm

Do all elements in their most stable form have standard Gibbs Free Energy of formation of zero? If so, could someone conceptually explain to me why this is so?

Srikar_Ramshetty 1K
Posts: 64
Joined: Fri Sep 28, 2018 12:27 am

Re: Elements with Gibbs Free Energy

Postby Srikar_Ramshetty 1K » Sun Feb 17, 2019 9:50 pm

Elements in their standard state have an enthalpy of formation(deltaH) equal to 0. This does not mean Gibbs.

deltaH(formation) = 0

deltaG = deltaH -TdeltaS
deltaG = 0 - TdeltaS

Delta G is equal to 0 when the reaction is at equilibrium, which also means when K=1.
Hope this helps.

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