Health & Environmental Research Online (HERO)


Print Feedback Export to File
7603990 
Journal Article 
Conductometric and ultrasonic studies on ion-solvent interaction of K+ of KCNS in water plus methanol/ethanol mixtures 
Bhat, JI; Kumar, HRS 
2003 
Yes 
Indian Journal of Chemical Technology
ISSN: 0971-457X 
NATL INST SCIENCE COMMUNICATION-NISCAIR 
NEW DELHI 
10 
1 
7-13 
WOS:000181129900001 
The results of the ion-solvent interaction of K+. potassium thiocyanate in water + methanol/ethanol and their various mixtures (v/v,) at 288, 298, 308 and 313K, using conductivity principle are reported. The solvation number of cation was determined by ultrasonic and mobility methods. Conductivity data were analysed by three major conductivity models. Limiting molar conductance decreases sharply with increase in co-solvent concentration. Association constant, Walden product, corrected Stoke's radius (r(1)) and activation energy (E-a) of rate process were calculated for all solvent compositions and temperatures. Measured viscosity and ultrasonic velocity were used to determine solvation number of potassium ion (K+) and is found to be maximum in methanol. The Born relations were used to compute thermodynamics of solvation. All these data were used to investigate the nature of ion-solvent interaction existing in the system under prevailing conditions.