Gibbs free energy and temperature


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Jose Torres
Posts: 31
Joined: Fri Sep 28, 2018 12:22 am

Gibbs free energy and temperature

Postby Jose Torres » Sun Mar 03, 2019 7:43 pm

What's the relationship between Gibbs Free Energy and the temperature in the equation(s)?

bonnie_schmitz_1F
Posts: 81
Joined: Fri Sep 28, 2018 12:24 am
Been upvoted: 1 time

Re: Gibbs free energy and temperature

Postby bonnie_schmitz_1F » Sun Mar 03, 2019 7:53 pm

As the temperature increases and the change in enthalpy and the change in entropy stay constant, the change in gibbs free energy decreases and vice versa. This can be seen in the equation ∆G = ∆H - T∆S.

Mhun-Jeong Isaac Lee 1B
Posts: 54
Joined: Fri Sep 28, 2018 12:17 am

Re: Gibbs free energy and temperature

Postby Mhun-Jeong Isaac Lee 1B » Sun Mar 03, 2019 11:32 pm

Adding on, many questions deal with how temperature affects Gibbs free energy. For example, determining the temperature when the reaction changes from spontaneous to nonspontaneous is in other words finding the temperature when Gibbs free energy changes from a negative value to a positive value. So there is a strong relationship between temperature and Gibbs free energy.

Tameen Ahmed 4C
Posts: 30
Joined: Fri Sep 28, 2018 12:19 am

Re: Gibbs free energy and temperature

Postby Tameen Ahmed 4C » Tue Mar 05, 2019 4:44 pm

Temperature is a factor of TΔS, so a high temperature will favor spontaneity if ΔS is positive and will not favor spontaneity if ΔS is negative.


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