Delta G


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Ghadir Seder 1G
Posts: 134
Joined: Sat Sep 14, 2019 12:17 am

Delta G

Postby Ghadir Seder 1G » Sun Feb 16, 2020 6:27 pm

Can someone explain to me what the difference between delta g and delta g naught is? How does this difference change the values in the equation?

Jessica Castellanos
Posts: 102
Joined: Sat Aug 24, 2019 12:17 am
Been upvoted: 1 time

Re: Delta G

Postby Jessica Castellanos » Sun Feb 16, 2020 6:43 pm

Delta G naught is Gibb's Free Energy at standard state since the degree mark, naught, indicates substance in standard state

Louise Lin 2B
Posts: 97
Joined: Sat Aug 17, 2019 12:15 am

Re: Delta G

Postby Louise Lin 2B » Mon Feb 17, 2020 2:28 pm

also, delta G naught usually refers to the reaction in a laboratory setting, while delta G refers to reactions in a biological setting, like within the body.

Brian J Cheng 1I
Posts: 115
Joined: Thu Jul 11, 2019 12:15 am

Re: Delta G

Postby Brian J Cheng 1I » Mon Feb 17, 2020 4:18 pm

But how are calculations different for each? and how will we tell when to use delta G or delta G naught in calculations?

MAC 4G
Posts: 121
Joined: Wed Sep 18, 2019 12:16 am

Re: Delta G

Postby MAC 4G » Mon Feb 17, 2020 4:23 pm

I believe someone answered the question of when to use which equation really well here:
viewtopic.php?f=135&t=59535&p=224882&hilit=delta+g+delta+g+naught&sid=dbd85a72ff5163bdbee84a646ab24983#p224882

Brian J Cheng 1I
Posts: 115
Joined: Thu Jul 11, 2019 12:15 am

Re: Delta G

Postby Brian J Cheng 1I » Mon Feb 17, 2020 4:24 pm

Thanks Mac! That was very helpful.

CameronDis2K
Posts: 51
Joined: Wed Feb 20, 2019 12:18 am

Re: Delta G

Postby CameronDis2K » Fri Feb 21, 2020 4:46 pm

Delta G (not) is the standard state of the Gibbs free energy of a compound, usually at 1atm and 25C (temperature). Delta G by itself depends on the compounds and non-STP conditions.


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