Units for G°

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Leonardo Le Merle 1D
Posts: 56
Joined: Wed Feb 27, 2019 12:16 am

Units for G°

Postby Leonardo Le Merle 1D » Tue Mar 03, 2020 11:42 pm

Should standard reaction Gibbs free energy be expressed in joules (or kJ) per mole? Or simply in joules alone?

The textbook says the latter, whereas the solutions manual says the former.

Thanks

charleejohnson1L
Posts: 99
Joined: Fri Aug 30, 2019 12:17 am

Re: Units for G°

Postby charleejohnson1L » Wed Mar 04, 2020 12:36 am

i'm pretty sure that the standard gibbs free energy is in joules per mole, but i could be wrong. could someone confirm?

Eunice Nguyen 4I
Posts: 100
Joined: Sat Aug 17, 2019 12:17 am

Re: Units for G°

Postby Eunice Nguyen 4I » Wed Mar 04, 2020 2:38 am

I also think it's joules per mole, but I guess to be safe, just make sure to include all units when calculating and then seeing what cancels out in the end for the final units.

JohannaPerezH2F
Posts: 94
Joined: Wed Sep 18, 2019 12:18 am

Re: Units for G°

Postby JohannaPerezH2F » Wed Mar 04, 2020 9:17 am

i also think its joules per mole, but when doing the calculations you'll be able to confirm

Connor Chappell 2B
Posts: 59
Joined: Wed Feb 20, 2019 12:16 am

Re: Units for G°

Postby Connor Chappell 2B » Wed Mar 04, 2020 9:37 am

Standard Free energy change units are either Joules per mole or Kilojoules per mole.

Deena Doan 2F
Posts: 100
Joined: Sat Aug 17, 2019 12:17 am

Re: Units for G°

Postby Deena Doan 2F » Wed Mar 04, 2020 10:43 am

It's usually joules per mole

LNgo 1G
Posts: 100
Joined: Sat Aug 24, 2019 12:16 am

Re: Units for G°

Postby LNgo 1G » Wed Mar 04, 2020 11:05 am

I believe it is Joules per mol because the constant n in the equation delta G=nFE represents the number of electrons transferred but is represented by a unit less value.


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