How can I find the adiabatic equation for real gases?

[AudriusR]

Hey!
Maybe anyone knows, how to get real gas adiabatic equation. It's not a big deal, when you need to get ideal gas equation, but I haven't got any ideas about real gas. I'm wondering maybe it's something with Van der Waals equation, but in my opinion it can't be like this :

(p+a/V²)(V+b)^$\gamma$ = constant


So any ideas? It would be great, if you could show me detailed answer.

 

[AudriusR]

I got an equation to solve for this, maybe anyone could help :

n Cv dT + an/V + nRT logV/ logbn = 0

How to get exact equation for adiabatic process from this ?

 

[bm0p700f]

The van der Vaal equation does not hold for all gases or all conditions it has limits.