Thermodynamics of tetrahedral molecular fluids

MANOJ KUMAR*, MUKESH KUMAR SINHA*, JYOTISH KUMAR*, ANJANA KUMARI¹ and TARUN KUMAR DEY

¹Department of Physics, Purnea Mahila College, Purnea - 854 301 (India). *Post Graduate Department of Physics, L.S.College, B.R.A.Bihar University, Muzaffarpur-842001 (India).

Received on August 08, 2009 and accepted on October 15, 2009

ABSTRACT

An effective pair potential for molecular fluid is expressed in the effective Lennard - Jones ( ELJ ) ( 12 - 6) potential form. We employ this theory to estimate the thermodynamic properties such as excess free energy A , residual internal energy U at zero pressure and critical point location of Carbon tetrachloride ( CCl4 ) .The agreement with experimental data is found to be fairly good .

Keywords : Free energy, internal energy, critical point location