usage

[Sophia Dinh 1D]

what is the van’t hoff equation used for?

[ayushibanerjee06]

you can use it to find either: K1, K2, delta H, T1, or T2

[AJForte-2C]

I know in lecture he said that it could be used for calculating k at different temperatures if standard enthalpy is known, but can anyone give some more specifics on how to find other variables with this equation?

[Taylor Newville 1C]

The equation
lnK=−ΔHo/RT + −ΔSo/R
can be used to find the temperature dependency of K. How K increases or decreases with temperature is linked to whether the reaction enthalpy is positive or negative.
This is because the modified version of the equation
ln(K2/K1)=−ΔHo/R(1/T2−1/T1)
can be used to find any of the missing variables in the equation. For example, if you know ΔHo, K1, T2, and T1, then you can calculate K2.

[Lisa Wang 3B]

The equation, when given the other components, can be used to find delta H, T, delta S, and K. In some circumstances, you can use n*delta H = q or delta G = -RTlnK in conjunction to help you.

[Siwa Hwang 3G]

You can use it to find different components of the reaction such as delta H and K when Temperature changes.

[Sai Ramadas 1J]

The Van't Hoff equation is typically used to calculate K at a different temperature if the change in standard enthalpy is known. However, I suppose we could also use it to calculate any of the other values in the equation if we had enough information.

[Joshua Swift]

It is usually used to calculate K, but if given enough of the other variables in the problem you could rearrange the equation to solve for an unknown.

[Nick Saeedi 1I]

it can be used to solve for the enthalpy change or K depending on the information given.

[Dane_Beasley_1E]

It can be used to find the enthalpy, temperature, or the K.