Physical Chemistry/State Functions
The following demonstrates what's a state function and what's not a state function.
is not exact differential for a gas obeying van der Waals' equation, but is as demonstrated below:
We assume quasistatic situation, so .
Now, you take the cross partial derivatives.
They are not equal; hence, is not exact differential (not a state function).
However, if we take it will be exact differential (a state function).
Take the cross partial derivatives.
Both are equal making exact differential (a state function).
Read in another language
This page is available in 1 language