Van't Hoff Equation

[Jeffrey Wang]

I don't quite understand when and why I need to use this equation. What is its relevance to delta H? What is an example of the problem that utilizes this?

[Austin Hyun 1F]

So essentially, the Van't Hoff Equation is used to calculate the equilibrium constant at different temperatures. The equation assumes a constant delta S^o and a constant delta H^o, as these standard values should not change based upon a temperature change. Thus, given K₁ at temperature T₁, you can use the Van't Hoff Equation to calculate K₂ at any temperature T₂ for a reaction. I hope that clarifies things!

[Rachel Lipman]

What type of wording in a question would lead us to use this equation?

[Caleb Lim 2M]

Is the Van`t Hoff Equation related to the Arrhenius Equation, or am I totally off the mark? I remember seeing that equation but I thought it was the Arrhenius equation (A variataion or something of it).

[EmmaSaid3C]

I think that the best way to know when to use the Van't Hoff Equation is when you are given 2 equilibrium reactions at two different temperatures. It is part of the thermodynamics chapter and can be found on page 42 in the course reader.

[Irma Ramos 2I]

Would there ever be a time when we are asked to calculate K but not given delta H? If so, then how would we solve for K?