International Science Community Association Research Journal of Chemical Sciences 2231 - 606X 1 2 2011 May 18 Free Energy of Mixing of Two Magnesium Based Binary Liquid Alloys 99 102 EN Manocha N. 1 Swami Vivekanand college of Pharmacy, Indore, INDIA Chandra S.K. 2 Suresh Gyan Vihar University, Jaipur, INDIA Sharma V. 3 B.M College of Pharmaceutical Sciences, Indore, INDIA Sangameswaran B. 4 Saluja M. 5 Sathyaraj A. 1 Swami Vivekanand college of Pharmacy, Indore, INDIA Satyanarayana V. 2 Suresh Gyan Vihar University, Jaipur, INDIA Rao M.V.Basaveswara 3 B.M College of Pharmaceutical Sciences, Indore, INDIA Pruthviraj R.D. 1 Dept. of Chemistry, Amruta Institute of Eng. and Mangt. Sci., Bidadi, Bangalore, INDIA Rao G.V. 1 CavinKare Research Centre, 12, Poonamalle Road, Ekkattuthangal, Chennai-600 032, INDIA Annamalai T. 2 Mukhopadhyay T. 3 Madhavi S 4 Machavolu Lakshmi 5 Mbabazi Jolocam 1 Department of Chemistry, Makerere University, P.O. Box 7062, Kampala, UGANDA Ntale M. 2 Department of Chemistry, Kyambogo University, P.O. Box 1, Kyambogo, UGANDA Kwetegyeka J. 3 Department of Chemistry, Gulu University, P.O. Box 166, Gulu, UGANDA Mulongo G. 4 Twinomuhwezi H 5 Nnamuyomba P. 6 Benarjiand K.V. PatruduT. 1 Dept. of Chemistry, College of Eng., GITAM University, Hyderabad campus, Visakhapatnam, INDIA SangerS. H. 1 Dept. of Elec. and other Energy Sources, College of Agri. Eng. and Tech. DBSKKV, INDIA Mohod A.G. 2 Y.P. Khandetode 3 H.Y. Shrirame 4 Deshmukh A.S. 5 hivaraju P.H 1 Dept. of Environmental Science, Yuvaraja Collage, University of Mysore, Mysore, INDIA Olarinoye I.O. 1 Department of Physics, Federal University of Technology, Minna, NIGERIA Iorfa AdamuChristopher 1 Department of Geology, University of Calabar. P.M.B 1115, Calabar,NIGERIA Ntonzi NganjeTherese 2 Dept. of Chemistry, Federal University of Petroleum Resources, Effurum, Delta State, NIGERIA Ukwang E.E. 3 Department of Chemistry, Cross River State University of Technology, NIGERIA Abara IBE Keneth 4 Peter Neji 5 Mbabazi Jolocam 1 Department of Chemistry, Makerere University, P. O. Box 7062, Kampala, UGANDA Solomon Yiga 2 Ssekaalo Henry 3 Sekkina MorsyM.Abou 1 Chemistry Department, Faculty of Science, Tanta University, Tanta, EGYPT Salahuddin NehalA. 2 Ceramic Department, National Research center,Cairo, EGYPT. Elmaghraby A. 3 El-Ashry MonaY. 4 Chakrabarti S.K. 1 Dept. of Physics, M.M.A.M. Campus, Tribhuvan University, Biratnagar, NEPAL Yadav R.P. 2 Dept. of Chemistry, M.M.A.M. Campus, Tribhuvan University, Biratnagar, NEPAL Yadav R.N. 3 Dept. of Mathematics, M.M.A.M. Campus, Tribhuvan University, Biratnagar, NEPAL > Research Paper 2011 4 11 2011 May 18 There are a large number of binary liquid alloys which exhibit interesting behavior as a function of concentration as regards the thermodynamic properties. The anomalous behavior of these liquid alloys is least understood and demands extensive theoretical investigations. In the present work we have considered two binary molten alloys of magnesium-magnesium-bismuth and magnesium-tin-and tried to calculate their free energy of mixing (G) at different concentrations of the ingredients. Flory’s model has been applied to study the asymmetric behavior of G of them. It is a statistical mechanical model for the binary liquid alloys based on the size factor of the constituent metals. For each alloy we have started with the expression for activity of magnesium within it according to this model.Activity (a) is one of the fortunate thermodynamic functions which are obtained directly from experiment.After knowing the ratio of the atomic volumes of the constituent species of the alloy we have determined the interchange energy ) between them from the experimental values of ‘a’ by the method of successive approximations. Thereafter G has been computed from the mathematical expression of it by using this value of w. The results explain the observed anomaly in the free energy of mixing of the present liquid alloys. Copyright@ International Science Community Association