Gibbs Free Energy Definition






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megansardina2G
Posts: 61
Joined: Fri Sep 28, 2018 12:23 am
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Gibbs Free Energy Definition

Postby megansardina2G » Sun Feb 17, 2019 4:04 pm

What is a good definition for “free energy”? I’m a bit confused on what the problems are talking about when the energy is “free”.

Timothy_Yueh_4L
Posts: 57
Joined: Fri Sep 28, 2018 12:28 am

Re: Gibbs Free Energy Definition

Postby Timothy_Yueh_4L » Sun Feb 17, 2019 4:09 pm

Gibbs free energy refers to the amount of energy from a chemical reaction that can be used to do work.

Saman Andalib 1H
Posts: 73
Joined: Fri Sep 28, 2018 12:16 am

Re: Gibbs Free Energy Definition

Postby Saman Andalib 1H » Sun Feb 17, 2019 4:11 pm

The amount of available energy in a system which is available to do work.

Rami_Z_AbuQubo_2K
Posts: 89
Joined: Thu Jun 07, 2018 3:00 am

Re: Gibbs Free Energy Definition

Postby Rami_Z_AbuQubo_2K » Sun Feb 17, 2019 4:20 pm

What exactly is Gibbs free energy, and how does it related to entropy and enthalpy without strictly looking at the equations.

anthony_trieu2L
Posts: 60
Joined: Fri Sep 28, 2018 12:29 am

Re: Gibbs Free Energy Definition

Postby anthony_trieu2L » Sun Feb 17, 2019 4:37 pm

Gibbs free is energy is energy available to do work. You can think of it as enthalpy being the total amount of energy and T times delta S (TΔS) being the energy that is lost to entropy. Thus, change in Gibbs free energy is equal to change in enthalpy minus TΔS (ΔG = ΔH – TΔS).


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