## Outline Clarification on Van't Hoff EQ

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

John Liang 2I
Posts: 102
Joined: Fri Aug 30, 2019 12:18 am

### Outline Clarification on Van't Hoff EQ

On the outline, we are expected to be able to "Use a Chemistry Van't Hoff analysis to calculate H, S, and G." Can I get clarification on what this exactly means? Using the EQ to find the other variables?

Pegah Nasseri 1K
Posts: 100
Joined: Wed Feb 27, 2019 12:15 am

### Re: Outline Clarification on Van't Hoff EQ

The Van't Hoff Equation is derived using two equations: $\Delta G= -RTlnK and \Delta G=\Delta H-T\Delta S$
Setting the two equations to each other gives you the Van't Hoff Equation: $ln K = - \frac{\Delta H}{RT} + \frac{\Delta S}{R}$
In the Van't Hoff Equation, you can use the whatever constants are given to you to solve for the variables H,S, and K. You can also use your Delta H and Delta S values to find Delta G using Delta G = Delta H - T (Delta S).