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Van't Hoff Equation

Posted: Tue Feb 18, 2020 11:58 am
by Katie Bart 1I
When do you use the Van't Hoff Equation? And how does it relate to Gibbs Free Energy?

Re: Van't Hoff Equation

Posted: Tue Feb 18, 2020 12:28 pm
by Brian Tangsombatvisit 1C
You use the Van't Hoff equation to find a different K at a different temperature if the enthalpy of a reaction is known. Using the equation, you plug in all the values you are given (K1, H, T1 and T2) to find K2. Or you can be given K2 instead of T2 and use the equation to find T2.

Re: Van't Hoff Equation

Posted: Tue Feb 18, 2020 1:42 pm
by Naji Sarsam 1F
The Van't Hoff Equation is derived from two expressions for Gibbs Free Energy.

Re: Van't Hoff Equation

Posted: Tue Feb 18, 2020 1:50 pm
by Sally Qiu 2E
van't hoff equation is used to find the K value for different temperatures

Re: Van't Hoff Equation

Posted: Wed Feb 19, 2020 3:40 pm
by Justin Quan 4I
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You use the Van 't Hoff equation why you are asked to relate the change in the equilibrium constant, K, of a chemical reaction to the change in temperature, T. The question will likely give you the standard enthalpy change, ΔH, and ask for K, or vice versa.