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Homework Statement
Find [tex](\frac{dV}{dp})_{n,T}[/tex] for the Van de Waals gas law
Homework Equations
Van de Waals gas law: [tex](\frac{p+an^2}{V^2})(V-nb)=nRT[/tex]
The Attempt at a Solution
I just started doing problems like these so I would like to know if I am doing them right...
What I did was I took the implicit derivative of dV WRT dp for both sides...
[tex](\frac{V^2-(p+an^2)2V(\frac{dV}{dp})}{V^4}(V-nb)+(\frac{p+an^2}{V^2})(\frac{dV}{dp})=0[/tex]
...Solve for dV/dp and I ended up getting...
[tex]\frac{dV}{dp}=\frac{V-nb}{\frac{2(p+an^2)(V-nb)}{V}-p+an^2}[/tex]
...Can anyone verify this is correct? Or if it is not correct, can you verify I took the right approach? I haven't done calculus in a while before this course, but is this the correct approach to implicit differentiation? Differentiate p as normal but tack on a "dV/dp" after differentiating a V?
Thanks!