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delta G vs. delta G naught

Posted: Mon Feb 17, 2020 8:32 pm
by Rachel Yu 1G
Just to clarify, would the reaction Gibb's free energy be delta G and the standard Gibb's free energy be delta G naught. Conceptually, what is the difference?

Re: delta G vs. delta G naught

Posted: Mon Feb 17, 2020 8:40 pm
by Paul Hage 2G
Yes, that is correct. The only difference is that delta G naught represents the delta G at standard conditions (1 atm and 298 K). Therefore, as a reaction approaches equilibrium, delta G naught would not change because it still represents standard conditions, whereas delta G will change because it incorporates the changes that occur within the reaction.

Re: delta G vs. delta G naught

Posted: Tue Feb 18, 2020 12:10 am
by Matthew Tsai 2H
Delta G naught is a constant for a given chemical equation (measured under standard conditions) while delta G changes as the reaction progresses and conditions change.

Re: delta G vs. delta G naught

Posted: Tue Feb 18, 2020 1:53 am
by Brianna Becerra 1B
An equation that utilizes both is when Delta G naught is used to calculate delta G through Delta G= Delta G naught + RTlnQ. Delta G naught can be calculated by using
-RTlnK.

Re: delta G vs. delta G naught

Posted: Tue Feb 18, 2020 2:35 am
by andrewcj 2C
delta G naught is under standard conditions. if conditions are not standard, use delta G.

Re: delta G vs. delta G naught

Posted: Wed Feb 19, 2020 12:05 pm
by Viviana Velasquez
Delta g naught is under standard condition unlike delta G that can be any condition

Re: delta G vs. delta G naught

Posted: Wed Feb 19, 2020 12:09 pm
by Tai Metzger 3K
delta G for the reaction depends on what conditions the reaction is occurring at. When conditions are standard, we call the delta G delta G naught. I hope this helps!