## Units for Gibbs

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

Posts: 91
Joined: Fri Sep 28, 2018 12:16 am

### Units for Gibbs

When solving for G using H and S, if the H is given in J/mol, should we covert the value to KJ so that our final answer is in the SI unit is in KJ or just be consistent with the units?

Becky Belisle 1A
Posts: 81
Joined: Fri Sep 28, 2018 12:18 am

### Re: Units for Gibbs

I think KJ is best, but it should not really matter.

Saachi_Kotia_4E
Posts: 68
Joined: Fri Sep 28, 2018 12:23 am

### Re: Units for Gibbs

I dont think it matters, as long as it makes sense. For example, using joules would be better if you get something like 57 J, because that would be 0.057 kJ and it just looks neater with J. On the same note, if you get 57000 J, it might be better to convert that to 57 kJ

005113695
Posts: 59
Joined: Fri Sep 28, 2018 12:15 am

### Re: Units for Gibbs

It doesn't matter which one you convert to, as long as you make sure both are in the same units

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

### Re: Units for Gibbs

Doesn't matter as long as it is easy to read (ie Don't have it in joules if you just have it look neater in kj like 10 kJ instead of 10000J) cause the point of science is to be universal and for our data to be easily read and interpreted

Letizia Ye 4F
Posts: 62
Joined: Fri Sep 28, 2018 12:28 am

### Re: Units for Gibbs

I don't think it matters whether the final answer is in J or kJ, but make sure when you're plugging them in the equation they're in the same units.

Nicole Lee 4E
Posts: 60
Joined: Fri Sep 28, 2018 12:16 am
Been upvoted: 1 time

### Re: Units for Gibbs

It shouldn't matter. However almost all of the answers in the textbook are given in kJ.

PranitKumaran1F
Posts: 30
Joined: Thu Nov 08, 2018 12:17 am

### Re: Units for Gibbs

As long as they are the same units it doesn't matter, whatever is easier for you.

Posts: 60
Joined: Fri Sep 28, 2018 12:16 am

### Re: Units for Gibbs

Either J or kJ should be fine for the final answer, as long as you're consistent with units while you're doing the calculation so that the number ends up being correct.

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