Difference between revisions of "Van der Waals equation"
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Latest revision as of 10:44, 6 June 2008
The van der Waals equation is an equation of state in thermodynamics relating the physical quantities pressure, volume, temperature, and van der Waals forces in a gas.
Equation
The law states:
![\[\left(P-\alpha\frac{n^2}{V^2}\right)(V-\beta n)=nRT\]](http://latex.artofproblemsolving.com/f/2/d/f2decc732e59bb1aa2381b0a590bf6ee5290b227.png)
where 
and 
are dependent on the gas, 
is the volume, 
is the pressure, 
is the number of moles of gas, 
is the universal gas constant, 
is the temperature.
The van der Waals equation is useful for high-pressure gases where the ideal gas law is inaccurate.
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