## Formulas

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

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

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

Lina Petrossian 1D
Posts: 77
Joined: Fri Oct 05, 2018 12:16 am

### Formulas

How do we know when to use the different formulas for gibbs free energy?

Hilda Sauceda 3C
Posts: 76
Joined: Fri Sep 28, 2018 12:24 am

### Re: Formulas

I think its just depends on what is given and known.

kateminden
Posts: 63
Joined: Fri Sep 28, 2018 12:24 am

### Re: Formulas

Yeah, it really just depends on what information the problem gives you.

dgerges 4H
Posts: 65
Joined: Fri Sep 28, 2018 12:24 am

### Re: Formulas

usually look for the unknown the question is asking for and list out the values they give you to know which equation to use.

Nicolle Fernandez 1E
Posts: 56
Joined: Fri Sep 28, 2018 12:25 am
Been upvoted: 1 time

### Re: Formulas

The equations depends on what is given, but all the formulas are given on the front sheet and those that aren't given you can derive

Mark 1D
Posts: 63
Joined: Fri Sep 28, 2018 12:18 am

### Re: Formulas

whichever is best suited to the needs and variables of the question

Julia Lung 1I
Posts: 30
Joined: Fri Jun 23, 2017 11:39 am

### Re: Formulas

There are three equations that are given connecting Ecell, K and DeltaG if you're given one you can find the others.