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EXCESS MOLAR VOLUMES, SURFACE TENSIONS,VISCOCITY DEVIATION AND FTIR SPECTROSCOPY OF 1-BUTANOL-ETHYL ACETATE BINARY SYSTEM MIXTURE

Author: Mustafa J. Nuhma
Journal: Al-Qadisiyah Journal for Engineering Sciences مجلة القادسية للعلوم الهندسية ISSN: 19984456 Year: 2017 Volume: 10 Issue: 4 Pages: 643-653
Publisher: Al-Qadisiyah University جامعة القادسية

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Abstract

The physical properties (viscosity, surface tension and density) were computed in laboratory using different laboratory equipment for binary and pure system at (P=1 atm and T=25C). At mole fraction 0.5, the excess volume was found to be positive value while the deviation in viscosity and surface tension was found as negative values at the same mole fraction. Experimental excess properties were compared using Redlich-Kister equation and showed acceptable standard deviation. The inter molecular interaction of the 1-Butanol and Ethyl acetate found to be negligible and the vulnerability of the hydrogen bonds according to the FTIR spectra to a mixture of 1-Butanol and Ethyl acetate is consistent with the positive values of excess volume. Overlying the values of surface tension and the deviation in viscosity was found as negative values for all mole fractions studied.


Article
Excess Thermodynamic Properties and Ftir Spectroscopy of Aceton-Isopropanol Liquid Binary Mixture

Authors: Ali A. Jazie --- Mustafa J. Nuhma
Journal: Journal of University of Babylon مجلة جامعة بابل ISSN: 19920652 23128135 Year: 2018 Volume: 26 Issue: 2 Pages: 97-105
Publisher: Babylon University جامعة بابل

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Abstract

Experimental investigation was done using different instruments for the testing the properties of density, surface tension and viscosity in the case of pure and mixture system at the normal temperature of 25 oC and 1 atm. Excess volume was found to exhibit negative value at a mole fraction of 0.5. The deviation in the surface tension and viscosity were found of a positive value at the mole fraction value of 0.5. The experimental excess properties were correlated using the Redlich-Kister (RK) equation and showed an accepted standard deviation. The intermolecular interaction between acetone and isopropanol was found of negligible effect and showed a weakness in the hydrogen bonding according to the FTIR spectra for the mixture of acetone and isopropanol which agreed with the positive values of excess molar volume. Moreover, the values of surface tension and viscosity deviations were found of negative values for all the mole fraction range studied.

تمت الدراسه العمليه باستخدام اجهزه مختلفه لاختبار خواص الكثافه والشد السطحي واللزوجه للمكونات النقيه للسائل المدروس وكذلك للسائل الثنائي التركيب من الاسيتون والايزوبروبانول عند درجة حرارة 25 درجه مئويه وضغط جوي مقداره 1 ضغط جوي. لقد وجد ان قيمة الحجم المولي هي قيمة سالبه عند الكسر المولي الذي مقداره 0,5. بينما تم ايجاد قيم الانحراف في الشد السطحي والانحراف في اللزوجه عند الكسر المولي 0,5 وكانت قيم موجبه. تم ربط الخواص العمليه الزائديه بعضها مع البعض الاخر باستخدام معادلة ردلج كيستر وقد كانت النتائج ذات انحراف معياري مقبول. بواسطة تحليل المطياف الضوئي فقد تبين ان الترابط الجزيئي الداخلي لمكونات السائل الثنائي التركيب (من الاسيتون والايزوبروبانول) مهمول التاثير وايضا من خلال تحليل المطياف الضوئي لهذا المزيج فقد تبين الضعف في الاواصر الهيدروجينيه وهذا يتفق مع الحجم المولي الزائد.من ناحية اخرى فان قيم الشد السطحي وقيم الانحرافات في الشد السطحي و اللزوجه هي قيم سالبه لجميع الكسور الموليه المدروسه.

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