## Gibb's free energy Units

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

beckyolmedo1G
Posts: 34
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### Gibb's free energy Units

Do the units of delta G always have to be kj/mol or can we leave them in J/mol?

Dayna Pham 1I
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### Re: Gibb's free energy Units

I don't think it matters as long as you keep your units consistent throughout and don't add kJ to J.

705192887
Posts: 77
Joined: Fri Sep 28, 2018 12:18 am

### Re: Gibb's free energy Units

Depending on what the units are in the problem, you can give your answer in terms of J or KJ as they are essentially interchangeable. Normally, it will be in terms of KJ/mol I presume.

MaanasO 1A
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### Re: Gibb's free energy Units

When converted from G to K (equilibrium constant), make sure you deal with J not kJ. Both are fine as answers unless specified otherwise, but make sure to check whether the units cancel properly in calcs.

Celio_G_Dis2C
Posts: 33
Joined: Fri Jan 11, 2019 12:16 am

### Re: Gibb's free energy Units

Either is fine as long as you're careful as to keeping them constant throughout the calculation because I've noticed that the textbook tends to give enthalpy in terms of kJ and Entropy in J so when you're adding them to get Gibbs Free energy make sure they're the same