### Van't Hoff use

Posted:

**Thu Feb 21, 2019 12:05 pm**in what situation would we use the Van't Hoff equation?

Created by Dr. Laurence Lavelle

https://lavelle.chem.ucla.edu/forum/

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=136&t=42555

Page **1** of **1**

Posted: **Thu Feb 21, 2019 12:05 pm**

in what situation would we use the Van't Hoff equation?

Posted: **Thu Feb 21, 2019 3:27 pm**

You would use this equation when you are trying to find out how a K value would change if you increased the temperature of a reaction (you would need to be given another K value at a lower or higher temp which is why there is K1/K2 and T1/T2).

Posted: **Wed Feb 27, 2019 8:02 pm**

Usually a Van't Hoff question will give you the reaction enthalpy and ask you to either find a K value from an original K and two temperatures, or a T value from and original T and 2 equilibrium constants.

Posted: **Fri Mar 01, 2019 12:53 am**

you use Van't Hoff when you are trying to relate a K value to the increasing temperature T.

Posted: **Sun Mar 03, 2019 7:37 pm**

I have found that we use Vant Hoff when we are either given 2 temperatures and a K or two Ks and a temperature.

Posted: **Sun Mar 03, 2019 8:21 pm**

You would use the Van't Hoff equation when you are given two temperatures and a K value

Posted: **Sun Mar 03, 2019 9:10 pm**

The vant hoff equation can be rearranged to find different values, such as G values, enthalpy, entropy, temperature, and K values

Posted: **Sun Mar 03, 2019 9:41 pm**

You use Vant Hoff when you are trying to find how K changes as temperature changes.

Posted: **Sun Mar 10, 2019 11:55 am**

You can use this equation to find a lot of things depending on how you decide to rearrange the equation, but you know you need to use if the reaction involves a temperature change

Posted: **Sun Mar 10, 2019 1:28 pm**

The Van't Hoff equation would be used in order to determine the equilibrium constant as the temperature changes. Therefore, when you have two temperatures and two K values, one can use the Van't Hoff equation.

Posted: **Tue Mar 12, 2019 7:02 pm**

You would use the Van't Hoff equation when there is a temperature change and you are looking to find an equilibrium constant.

Posted: **Tue Mar 12, 2019 7:07 pm**

It would be used in a situation where you are trying to find a K value at a different temperature. For instance, on test 2, we were given the K value at one temp and we were asked to find the K value at a different temperature since the K value changes with temperature. In that situation, we would have to use the Van't Hoff equation.

Posted: **Sun Mar 17, 2019 8:48 am**

You would use Van't Hoff equation when there is a temperature change and K

Posted: **Sun Mar 17, 2019 7:20 pm**

The van 't Hoff equation can be used to explore the changes in state functions in a thermodynamic system