## kJ or kJ/mol?

$\Delta G^{\circ}= \Delta H^{\circ} - T \Delta S^{\circ}$

$\Delta G^{\circ}= -RT\ln K$

$\Delta G^{\circ}= \sum \Delta G_{f}^{\circ}(products) - \sum \Delta G_{f}^{\circ}(reactants)$

Mackenzie Sober 2E
Posts: 10
Joined: Fri Jul 08, 2016 3:00 am

### kJ or kJ/mol?

Yesterday in one of the review sessions the TA said something about how delta G should always be reported as kJ per mole of reaction. I thought we were only supposed to include per mole if the question specifically states per mole. Can someone please clarify?

Alexandra_Shambayate_2L
Posts: 14
Joined: Wed Sep 21, 2016 2:57 pm

### Re: kJ or kJ/mol?

We are always supposed to include the units KJ/mol regarding delta G. The book made mistakes and only included KJ in some of their answers to the practice problems about Gibbs, but they are supposed to be KJ/mol.

gohar_mkrtchyan_2J
Posts: 12
Joined: Sat Jul 09, 2016 3:00 am

### Re: kJ or kJ/mol?

we measure both enthalpy and Gibbs free energy in kJ mol-1 (kilojoules per mole).