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
Online published on 25 April, 2019.
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
