## G(not) and G

$\Delta G^{\circ} = -nFE_{cell}^{\circ}$

Johnathan Smith 1D
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Joined: Wed Sep 11, 2019 12:16 am

### G(not) and G

What is the difference between G(not) and G?

Tracy Tolentino_2E
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Joined: Sat Sep 07, 2019 12:17 am

### Re: G(not) and G

G(not) is the standard Gibbs Free energy. So it's the energy in standard conditions. (1 M, 1atm, 25 degrees Celsius)
G is Gibbs Free energy in other conditions

ASetlur_1G
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### Re: G(not) and G

Is it correct to say that G(not) is used at equilibrium (K value) and G is used for other conditions (Q value)?

KarineKim2L
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Joined: Fri Aug 30, 2019 12:16 am

### Re: G(not) and G

In addition to all of the above, the relationship between G not and G can be seen in the equation G not= G+RTlnQ.

Rafsan Rana 1A
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### Re: G(not) and G

Isn't the equation G = Gnot + RTlnQ ?

Jainam Shah 4I
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### Re: G(not) and G

G(not) is at standard conditions whereas G itself doesn't have to be at standard conditions.

Sean Tran 2K
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### Re: G(not) and G

G(not) represents standard Gibbs Free energy.

Leyna Dang 2H
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### Re: G(not) and G

G(not) is at standard Gibbs free energy, thus it is under standard conditions, unlike G.

Sanjana K - 2F
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### Re: G(not) and G

Rafsan Rana 1A wrote:Isn't the equation G = Gnot + RTlnQ ?

Yes, it should be delta G = delta G(naught) + RTlnQ.

Maya Beal Dis 1D
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### Re: G(not) and G

In problem 5G.13 you calculate the delta G of the reaction at equilibrium and then use whether that value is positive or negative to see which way the reaction will proceed (towards reactants or products), but if the reaction is at equilibrium doesn't that mean the reaction is going both ways at the exact same rate and would therefore favor neither direction?

KaleenaJezycki_1I
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### Re: G(not) and G

ASetlur_1G wrote:Is it correct to say that G(not) is used at equilibrium (K value) and G is used for other conditions (Q value)?

Yes for the most part.

BCaballero_4F
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### Re: G(not) and G

ASetlur_1G wrote:Is it correct to say that G(not) is used at equilibrium (K value) and G is used for other conditions (Q value)?

Yes this is essentially correct to say

205405339
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### Re: G(not) and G

G9not) is under standard conditions whereas G is not and G(n0t) will contribute to the value of G

Nathan Rothschild_2D
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### Re: G(not) and G

Naught always means 1M of solution or 1 atm at 298K (same as 25 Celsius)

Zoe Gleason 4F
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Joined: Tue Jul 23, 2019 12:15 am

### Re: G(not) and G

Gnaught will be under standard conditions, which are 1.0M, 1atm, and 25C.