Clausius equation of state

The Clausius equation of state is given by

$\left[P+{\frac {a}{T(v+c)^{2}}}\right](v-b)=RT$

where

$a=v_{c}-{\frac {RT_{c}}{4P_{c}}}$

$b={\frac {3RT_{c}}{8P_{c}}}-v_{c}$

and

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle c= \frac{27R^2T_c^2}{64P_c}}

References

1. R. Clausius "", Ann. Phys 9 pp. 337- (1880)