## Van't Hoff Equation

$\ln K = -\frac{\Delta H^{\circ}}{RT} + \frac{\Delta S^{\circ}}{R}$

Jasleen Kahlon
Posts: 52
Joined: Wed Nov 21, 2018 12:19 am

### Van't Hoff Equation

The Van't Hoff Equation shows temperature dependence of K, but I'm still a little confused on what that means, and does the equation in any way connect to ∆H, ∆S, and ∆G?

Eugene Chung 3F
Posts: 142
Joined: Wed Nov 15, 2017 3:03 am

### Re: Van't Hoff Equation

Jasleen Kahlon wrote:The Van't Hoff Equation shows temperature dependence of K, but I'm still a little confused on what that means, and does the equation in any way connect to ∆H, ∆S, and ∆G?

deltaG = -RtlnK

and since deltaG = deltaH -T*deltaS, we can rearrange it to solve for deltaH and deltaS.

Jacey Yang 1F
Posts: 101
Joined: Fri Aug 09, 2019 12:17 am

### Re: Van't Hoff Equation

The Van't hoff equation relates the change in the equilibrium constant K of a chemical reaction to the change in temperature. It is derived from combining the equations deltaG = deltaH - TdeltaS and delta G = -RTlnK.

christabellej 1F
Posts: 109
Joined: Sat Aug 17, 2019 12:17 am

### Re: Van't Hoff Equation

The Van't Hoff Equation is used to calculate K at different temperatures. In finding the K, you would assume that the delta S and delta H are not significant.