## Relationship b/w ∆H and ∆S

Volume: $\Delta S = nR\ln \frac{V_{2}}{V_{1}}$
Temperature: $\Delta S = nC\ln \frac{T_{2}}{T_{1}}$

705192887
Posts: 77
Joined: Fri Sep 28, 2018 12:18 am

### Relationship b/w ∆H and ∆S

So on the Thermodynamics outline on the class website, one of the bullet points says: "Show how ∆S is related to ∆H for a change at constant temperature and pressure and explain the relationship"

Can someone explain this concept and how to show it?

skyeblee2F
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

### Re: Relationship b/w ∆H and ∆S

Based of the Gibbs free energy equation (∆G = ∆H - T∆S) a spontaneous reaction will always occur when ∆H is negative and ∆S is positive, and a reaction will always be non-spontaneous when ∆H is positive and ∆S is negative.