کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9633526 | 1426345 | 2005 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermodynamics of complexation of aqueous 18-crown-6 with barium ion: apparent molar volumes and apparent molar heat capacities of aqueous (18-crown-6 + barium nitrate) at temperatures (278.15 to 393.15) K, at molalities (0.02 to 0.33) mol · kgâ1,
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We have measured the densities at T = (278.15 to 368.15) K and heat capacities at T = (278.15 to 393.15) K of aqueous solutions of {18-crown-6 + Ba(NO3)2} at molalities m = (0.02 to 0.33) mol · kgâ1 and at the pressure 0.35 MPa. We have applied Young's rule and have accounted for chemical speciation and relaxation effects to resolve VÏ and Cp,Ï to include contributions of the 18-crown-6-Ba2+(aq) complex in the mixture. We have also calculated estimates of the change in volume ÎrVm, the change in heat capacity ÎrCp,m, the change in enthalpy ÎrHm, and the equilibrium quotient lg Q for formation of the complex at T = (278.15 to 393.15) K and m = (0 to 0.33) mol · kgâ1 in the mixture.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Chemical Thermodynamics - Volume 37, Issue 9, September 2005, Pages 984-995
Journal: The Journal of Chemical Thermodynamics - Volume 37, Issue 9, September 2005, Pages 984-995
نویسندگان
S.P. Ziemer, T.L. Niederhauser, E.M. Woolley,