Asian Journal of Research in Chemistry

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0974-4150 (Online)
0974-4169 (Print)


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Helmholtz energies from equations of state and their relative deviations

Author(s): Tej P. Akhouri, K. Akhtar, Binay P. Akhouri

Email(s): akhouritej@rediffmail.com

DOI: 10.5958/0974-4150.2015.00092.9   

Address: Tej P. Akhouri1, K. Akhtar1, Binay P. Akhouri2
1P. G. Department of Chemistry, Ranchi University, Ranchi-834008, Jharkhand (India)
2Department of Physics, Birsa college, Khunti-835210, Jharkhand (India)
*Corresponding Author

Published In:   Volume - 8,      Issue - 9,     Year - 2015

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ABSTRACT:
Extension of the hard-sphere equations of state to non spherical hard- body systems represents a formidable task. For an equation of state that is applicable to liquid and vapor states (and explicit for pressures), the corresponding characteristic function is the residual energy. The equations of state of Carnahan Starling, Boublik and R J Sadus are used to derive an expression for residual Helmholtz energies. Relative deviations of residual Helmholtz energies for these equations of state have been reviewed. The deviations of compressibility factor against packing fraction have been plotted for these equations of state. The agreement of these plots is found to be good for lower n-alkanes but not for longer n-alkanes. Thus it becomes obvious that the compressibility factor depends considerably on the shape of the studied molecules.


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Cite this article:
Tej P. Akhouri, K. Akhtar, Binay P. Akhouri. Helmholtz energies from equations of state and their relative deviations. Asian J. Research Chem. 8(9): September 2015; Page 574-580. doi: 10.5958/0974-4150.2015.00092.9

Cite(Electronic):
Tej P. Akhouri, K. Akhtar, Binay P. Akhouri. Helmholtz energies from equations of state and their relative deviations. Asian J. Research Chem. 8(9): September 2015; Page 574-580. doi: 10.5958/0974-4150.2015.00092.9   Available on: https://ajrconline.org/AbstractView.aspx?PID=2015-8-9-5


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Asian Journal of Research in Chemistry (AJRC) (ISSN: print-0974-4169, Online-0974-4150) is an international, peer-reviewed journal devoted to pure and applied chemistry. AJRC publishes Original Research Articles, Short Communications, Review Articles in all aspects of chemistry. Topics covered including the traditional areas of analytical, inorganic, organic, biochemistry, forensic, physical-theoretical chemistry as well as newer interdisciplinary areas such as agriculture, materials science, computational, medicine, spectroscopy, polymers, supramolecular, surface, chemical physics, biological, medicinal/ drugs, environmental and pharmaceutical chemistry.
The journal is published quarterly every year in last week of March, June, September and December. From January 2011, is monthly and shall be published every year in last week of Month.    
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