## Equations

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

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

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

Gabriel Ordonez 2K
Posts: 113
Joined: Sat Jul 20, 2019 12:15 am

### Equations

What are the different, but essential, equations for gibbs free energy in thermodynamics? How can we manipulate the Gibbs Free energy equation with the R constant?

Kate Osborne 1H
Posts: 102
Joined: Fri Aug 30, 2019 12:16 am

### Re: Equations

∆G° = ∆H° - T∆S°and ∆G° = - RT ln K are the essential equations for thermodynamics

CalvinTNguyen2D
Posts: 102
Joined: Thu Jul 25, 2019 12:16 am

### Re: Equations

By using these two equations, we can set both of them equal to each other, and manipulate them to derive the Van't Hoff Equation.

Mai V 4L
Posts: 111
Joined: Fri Sep 28, 2018 12:23 am

### Re: Equations

anyone got any tricks to remember these? having a hard time!

AniP_2D
Posts: 95
Joined: Sat Aug 17, 2019 12:17 am

### Re: Equations

These equations are all on the formula sheet so there isn't really a need to memorize them.

WGaines_2E
Posts: 47
Joined: Mon Nov 18, 2019 12:18 am

### Re: Equations

also G=-nFE

Astrid Lunde 1I
Posts: 103
Joined: Sat Sep 07, 2019 12:16 am

### Re: Equations

∆G° = ∆H° - T∆S°and ∆G° = - RT ln K and G=-nFE are essential, but are also on your equation sheet.

Julia Holsinger_1A
Posts: 50
Joined: Tue Feb 26, 2019 12:16 am

### Re: Equations

In the text book I am seeing lots of equations that have (delta)G sub r, what does the r mean? I think its just reaction but I am not positive.

Alan Cornejo 1a
Posts: 98
Joined: Fri Aug 30, 2019 12:15 am

### Re: Equations

I would say there are three main ones, ∆G° = ∆H° - T∆S°and ∆G° = - RT ln K and G=-nFE . All of these are given on the constants sheet, and so being able to derive these equations and manipulate them to find them to your suitable variable you need to calculate is what you will most be needing to do