کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5413484 | 1506631 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preferential solvation of some copper (I), silver (I) and sodium (I) salts in acetonitrile + n-butyronitrile and acetonitrile + N,N-dimethylacetamide mixtures
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Viscosities and densities of Bu4NBPh4, Bu4NClO4, Bu4NI, Bu4NBr, Pr4NBr, Et4NI, Et4NBPh4, CuClO4, NaClO4 and NaBPh4 in AN + n-BTN and those of Bu4NBPh4, Bu4NClO4, Bu4NCF3COO, AgCF3COO and CuClO4 in AN + DMA mixtures in the concentration range (3-580) Ã 10â 4 mol dmâ 3 containing 100, 80, 60, 40, 20 and 0 mol% AN have been measured at 298 K. The viscosity data have been analyzed using the Jones-Dole equation in the form: ηηo=1+AC1/2+Bâ¢C for unassociated and in the formηηo=1+A(Câ¢Î±)12+B(Câ¢Î±)+Bâ²(1âα)Cfor associated electrolytes. The A-coefficients of the Jones-Dole equation are positive and are in reasonably good agreement with the limiting theoretical values (Aη) calculated using Falkenhagen-Vernon equation in some cases and two to three times larger in other cases. The B coefficients of the electrolytes are positive and large in all cases. The ionic B+ and Bâ coefficients have been evaluated from the Bâ coefficients of the electrolytes using a method reported by Gill and Sharma. The derived results show a strong preferential solvation of Na+ and Cu+ by n-BTN in AN + n-BTN and that of Ag+ and Cu+ by DMA in AN + DMA mixtures. Brâ, Iâ and ClO4â show weak preferential solvation by the same solvents while CF3COOâ shows no preferential solvation in AN +DMA mixtures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 133, Issues 1â3, 15 March 2007, Pages 7-10
Journal: Journal of Molecular Liquids - Volume 133, Issues 1â3, 15 March 2007, Pages 7-10
نویسندگان
Dip Singh Gill, Avnesh Kumari, Rahul Gupta, Dilbag Rana, J.K. Puri, S.P. Jauhar,