Gibbs Free Energy

[Sofia Ban]

Is there an easier way to think about the relationship of G, H, S, and temperature in the Gibbs free energy equation and how increasing/decreasing one variable will result in a positive/negative value for delta G?

[vibha gurunathan 1h]

- if delta H is negative and delta S is positive, Gibbs Free energy is negative (spontaneous)
- if delta H is positive and delta S is positive, T(delta S) has to be greater than delta H for Gibbs Free energy to be negative
- if delta H is negative and delta S is negative, delta H has to be larger than delta S for Gibbs Free Energy has to be negative

[Norman Dis4C]

It would be easier if you draw out the graph and compare the value of it. The graph is shown in 4J.4 in the textbook.

[Caroline Zepecki]

When calculating Gibbs free energy, do you use the same method as you would for Hess's law?

[WesleyWu_1C]

To calculate Gibb's free energy, you can use the same method as Hess's law. You can also use the equation: delta G = delta H - T(delta S).

[kevinolvera1j]

When calculating Gibbs free energy, do you use the same method as you would for Hess's law?

The method shown in Hess's Law can really be extrapolated to all state functions.