Solvent Effect on activation parameter For Kinetics Reaction of dipolar protic solvent of base catalised hydrolysis of propyl hexanoate in aquous solvent system

A.K. Singh

Abstract

The solvent effect of dipolar protic solvent on propyl hexanoate are investigated in water-propanol solvent system of different composition and different temperature ranging from 20 to 400c.The specific rate constant values of the reaction was found to decrease with gradual addition of propanol in reaction media. Enhancement in numerical values of free energy of activation (�G*) with simultaneous increase in enthalpy of activation (�H*) and entropy of activation (�S*) of reaction reveals that propanol acts as entropy inhibitor and enthalpy stimulator solvent. The iso- kinetic temperature of reaction was evaluated to be 332.52 which are greater than 300. Reveals that there is strong and appreciable solvent-solute interaction in reaction media.