APPARENT moLAR YOLUME, VISCOSITY AND ADIABATICCOMPRESSIBILITY OT OM MINERAL SULPHATES IN AQUEOUSBINARY MIXTURES OF FORMAMIDE AT 298.15, 308.15 AND 318.15 KE

摘要

The densities a d viscosities of several sulphates, viz., ammonium sulphate, sodium sulphate, ро-tassium sulphate, magnesium sulphate, zinc sulphate and catch sulphate in acome binary mixtures offormamide (FА) have Ьееn determined at 298.15, 308.15 аnd 318.15 К апd at atmospheric ргецге. Тhе ul-trasonic реес1 of the electrolytic о1[1Ыоп have also Ьееn measured at 298.15 K. Apparent mоlаг volumes(ф_v), viscosity B-coefficients and adiabatic compressibilities (K_s) of these electrolytic solutions were саlсu-lated from the experimental densitiy, viscosity аnd acoustic data. Тие density аnd viscosity data were еvаlu-ated Ьу using Маяоn' and 3опе-Оо1е equation respectively; the derived parameters have been апа1уеа interms of ion-ion and ion-solvent interactions. Тие structure making/breaking capacities of the electrolytes have Ьееп inferred from the sign of (~2ф_v~0/T~2)_р.The геп1 howed that аll the electrolytes ас а structure- makers in these media. Аlsо the compressibility data indicated electrostriction of the solvent moleculesагонна the cations. The activation parameters of viscous flow were also determined and discussed Ьу thе ар-plication of transition ае theory.