## Quick Reference

An equation of state that relates the pressure, volume, and temperature of a gas and the gas constant. The Beattie-Bridgman equation uses empirical constants to take into account the reduction in the effective number of molecules due to various types of molecular aggregation. It is given by *P*=*RT*(1 – ϵ)(*V*+*B*)/*V*^{2} – *A*/*V*^{2}, where *P* is the pressure, *T* is the thermodynamic temperature, *V* is the volume, *R* is the gas constant, and *A*, *B*, and ϵ are constants related to five empirical constants *A*_{0}, *B*_{0}, *a*, *b*, and *c* by: *A*=*A*_{0}(1 – *a*/*V*), *B*=*B*_{0}(1 – *b*/*V*), and ϵ=*c*/*VT*^{3}.

*P*=*RT*(1 – ϵ)(*V*+*B*)/*V*^{2} – *A*/*V*^{2}

*Subjects:*
Chemistry.