Modification of Cubic Equations of State for Polar Compounds
Volumetric properties of substances are crucial thermodynamic parameters in that they aid
personnel to compute other thermodynamic parameters like internal energy, enthalpy,
entropy, etc. Moreover, these are required in the design of process equipment and in the
sizing of pipelines. In 1873 van der Waals proposed an equation to predict volumetric
properties of idealized gases. Hitherto, a plethora of such equations known as cubic
equations of state have been proposed. Yet, the ongoing endeavor to find one such equation
which can predict the volumetric properties of highly polar compounds persists. This report
encompasses the headway for the modification of conventional cubic equations of state so
Keywords: cubic equation of state, intermolecular interaction, polar compounds, volume
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