A new equation of state for predicting the thermodynamic properties of liquid alkali metals

The density of liquid alkali metals in the extended ranges of temperature and pressure has been calculated using a new equation of state (EoS). A wide comparison with experimental data was made. The results show that the equation of state reproduces the experimental PVT data of liquid alkali metals within experimental errors throughout the liquid phase. The thermodynamic properties such as isobaric expansion coefficient, isothermal compressibility, and internal pressure have been calculated for these liquids using this EoS and compared with the corresponding experimental results. The generally excellent agreement with experimental data indicates that this EoS can be used to calculate the thermodynamic properties of liquid alkali metals with a high degree of certainty.