## La Chatelier's Principle

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

Maggie Elgin 2A
Posts: 19
Joined: Wed Sep 21, 2016 1:57 pm

### La Chatelier's Principle

How does the Van't Hoff equation related La chat. principle?

Posts: 9
Joined: Wed Sep 21, 2016 1:55 pm

### Re: La Chatelier's Principle

It has to do with equilibrium being altered. Also the theoretical bases of dependance of K temperature in Le Chataleir's Principle is given by Van't Hoff Equation.

Posts: 25
Joined: Thu Feb 02, 2017 3:00 am

### La Chatelier's Principle

I had an interesting time trying to figure this one out:

Basically if you have less reactants than products, more reactants are going to tend to form to establish a state of equilibrium.
If you have less products than reactants, more products are going to tend to form to establish a state of equilibrium.

:)

Chem_Mod
Posts: 13181
Joined: Thu Aug 04, 2011 12:53 pm
Has upvoted: 95 times

### Re: La Chatelier's Principle

Hi!
So the Van Hoff equation is a more quantitative way of figuring out which direction the reaction moves to re-establish equilibrium. Our approach in this class has been primarily a qualitative approach using the Chartliers principle. Which is heat is on 1 side of the equation based on the delta H of the reaction and adding heat to the same side will move the equilibrium to the opposite side also decreasing heat will move the equilibrium to the same side. :O