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Vol.2 , No. 1, Publication Date: Feb. 9, 2015, Page: 1-6
 in Mixed Acetonitrile (AN)-H2O Solvents at Different Temperatures&description=The silver chromate was prepared by the double salt interaction between silver nitrate and potassium chromate (2 AgNO3 +K2CrO4 = Ag2CrO4 + 2 KNO3). The molar solubility for bulk (normal) and nano silver chromate (SCr) in different percntages of acetonitrile (AN) and water were measured at 298.15, 303.15, 308.15 and 313.15K. From the molar solubilities for bulk and nano (SCr), the macroscopic solvation parameters like, solubility product, free energy of solvation, enthalpy of solvation and entropy of solvation were estimated. All these solvation parameters were discussed and compared for both bulk and nano (SCr). The macroscopic thermodynamics are greater for bulk than nano SCr.&picture=http://www.aascit.org/aascit/decorators/img/journal/896.jpg)
| [1] | Esam A. Gomaa, Manoura University Nanotechnology Center, Mansoura, Egypt; Faculty of Science, Chemistry Department, Mansoura University, Mansoura, Egypt. |
| [2] | Rania R. Zaky, Faculty of Science, Chemistry Department, Mansoura University, Mansoura, Egypt. |
| [3] | Ahmed Fekri, Faculty of Science, Chemistry Department, Mansoura University, Mansoura, Egypt. |
| [4] | Maii S. Abdel Hamid, Faculty of Science, Chemistry Department, Mansoura University, Mansoura, Egypt. |
The silver chromate was prepared by the double salt interaction between silver nitrate and potassium chromate (2 AgNO3 +K2CrO4 = Ag2CrO4 + 2 KNO3). The molar solubility for bulk (normal) and nano silver chromate (SCr) in different percntages of acetonitrile (AN) and water were measured at 298.15, 303.15, 308.15 and 313.15K. From the molar solubilities for bulk and nano (SCr), the macroscopic solvation parameters like, solubility product, free energy of solvation, enthalpy of solvation and entropy of solvation were estimated. All these solvation parameters were discussed and compared for both bulk and nano (SCr). The macroscopic thermodynamics are greater for bulk than nano SCr.
Keywords
Thermodynamics, Molar Solubility, Nano Silver Chromate, Free Energy, Enthalpy, Entropy of Solvation, AN – H2O Mixtures
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