1Research Scholar, Department of Chemistry, V.K.S. University, Ara, Bihar, India
2Research Scholar, Department of Physics, V.K.S. University, Ara, Bihar, India
3Professor and Formerly H.O.D. Chemistry & the Dean of the Faculty of Science, V. K. S. University, Ara, Bihar, India
The changes observed and evaluated due to the solvent effect of a dipolar protic or dipolar aprotic solvent on the thermodynamic extensive properties of solvolysis of the propionate ester have been found responsible for changes in its biochemical and medicinal properties. With a view to highlight the effect of a polyhydric alcohol (dipolar protic solvent) on the extensive thermodynamic properties of propionate ester, the kinetics of alkali catalysed hydrolysis of ethylpropionate was studied in aquo-glycerol reaction media.
From the enhancement observed in ΔG* values with simultaneous decrease in the values of ΔH and ΔS* of the reaction, it is inferred that the organic co-solvent glycerol acts as entropy controller and enthalpy stimulator solvent for alkali catalysed hydrolysis of ethyl propionate.
The numerical value of Iso-kinetic temperature of the reaction which comes to be nearly 286.0 (below 300) indicates that there is weak but considerable solvent-solute interaction in the aquo-glycerol reaction media.
Extensive properties, Trihydric alcohol, Dielectric effect Solvation and desolvation, Weak solvent-solute interacion
