ΔG° vs ΔG
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ΔG° vs ΔG
I think there is a difference between ΔG° and ΔG. Can anyone confirm if there is a difference and does anyone know what the difference is?
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Re: ΔG° vs ΔG
I think ΔG° refers to Gibbs free energy under standard conditions and ΔG is not under standard conditions
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Re: ΔG° vs ΔG
I'm not sure if this is the best definition for our chemistry class, but in biology (ls7a) we learned that delta G naught (the one with the degree symbol) refers to standard (in other words, the delta G you would calculate under in a laboratory). Delta G does not (for example, it could be used to describe spontaneity of a reaction inside a real system, like a cell).
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Re: ΔG° vs ΔG
ΔG° refers to Gibbs free energy at standard conditions usually meaning 1 atm and ΔG is Gibbs free energy at any given condition.
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Re: ΔG° vs ΔG
ΔG° is Gibbs free energy under standard conditions, while ΔG is not under standard conditions.
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Re: ΔG° vs ΔG
Delta G naught represents Gibbs free energy at "standard conditions", while Delta G is Gibbs free energy in any other condition.
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Re: ΔG° vs ΔG
Lavelle mentioned in lecture that any concept denoted by the '°' symbol means the substance is in its standard state. This allows for state function calculations like adding or subtracting delta G°rxn values to find total delta G°.
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Re: ΔG° vs ΔG
I think ΔG° is the variable under standard conditions and ΔG is in different conditions. From what I know, they require different calculations, and there is an equation where ΔG° is used to calculate ΔG.
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Re: ΔG° vs ΔG
ΔG°refers to Gibbs free energy under standard conditions. I recall in the lecture that the little circle on the top right refers to the standard form.
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Re: ΔG° vs ΔG
Every time you see the ° that means the system is standard (25 C or 298 K and 1 atm) but whenever the system has a different temperature or pressure than you just use G not G°.
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Re: ΔG° vs ΔG
The ° symbol refers to whatever the variable is in terms of standard conditions. Without the symbol, you use whatever conditions are given in the problem. This applies to other variables as well, like H, S, etc (not just G). Hope this helps!
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Re: ΔG° vs ΔG
ΔG°is Gibbs Free Energy under standard conditions, whereas ΔG is Gibbs Free Energy based on conditions given in the problem.
Re: ΔG° vs ΔG
ΔG° is Gibbs free energy under standard conditions. ΔG is not under those standard conditions.
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Re: ΔG° vs ΔG
ΔG° represents Gibbs free energy at standard conditions while ΔG represents Gibbs free energy at any condition.
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Re: ΔG° vs ΔG
ΔG° is called 'delta G naught' and it is referring to change in free energy at standard conditions, such as 1 atm or 25 C or 298 K.
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Re: ΔG° vs ΔG
There is a difference, ΔG° refers to Gibbs free energy under standard conditions and ΔG is not under standard conditions
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Re: ΔG° vs ΔG
Hey so from my understanding, ΔG° is Gibbs free energy under standard conditions, while ΔG is not under standard conditions.
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Re: ΔG° vs ΔG
The ΔG° is specifically under standard conditions which is 25 C (298K) and 1 atm of pressure. The ΔG is when you are calculating Gibbs free energy that is not under standard conditions.
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Re: ΔG° vs ΔG
I believe that the little circle means that it is in standard conditions and for one mole of substance. That applies to all terms. The same is for the enthalpy and other stuff that we learned about
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Re: ΔG° vs ΔG
ΔG° is Gibbs free energy under standard conditions which is in a system where it's 25 degrees C and 1 atm, while ΔG is not under the standard conditions.
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