|Title||Fluctuations in aqueous methanol, ethanol, and propan-1-ol: amplitude and wavelength of fluctuation|
|Publication Type||Journal Article|
|Year of Publication||1999|
|Journal||Canadian Journal of Chemistry-Revue Canadienne De Chimie|
|Type of Article||Article|
|Keywords||25-DEGREES-C, and propan-1-ol, aqueous methanol, ETHANOL, fluctuation density, HEAT-CAPACITIES, LIQUID WATER, N-ALCOHOL MIXTURES, NON-ELECTROLYTES, normalized fluctuation, partial molar fluctuations of alcohol, THERMODYNAMICS, VOLUMES|
Density, heat capacity, and isentropic compressibility data for aqueous methanol, ethanol, and propan-1-ol by Benson’s group were used to evaluate two kinds of fluctuations; mean-square fluctuation densities; and (mean-square) normalized fluctuations, respectively, in volume, entropy, and cross (entropy/volume) effect. The mean-square fluctuation densities provide measures for the amplitude (intensity) of the fluctuation, while the normalized fluctuations contain information regarding the wavelength (extensity) of the fluctuation. Furthermore, their composition derivatives, the partial molar fluctuations of alcohols were calculated. These quantities signify the effect of additional solute on the respective fluctuations. These data were interpreted in terms of mixing schemes learned earlier in this laboratory by using the data of excess partial molar enthalpy, entropy, and volume, and the respective alcohol-alcohol interaction functions, i.e., the composition derivatives of partial molar quantities.
|URL||<Go to ISI>://000084067500005|