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Asian Journal of Research in Chemistry
Year : 2019, Volume : 12, Issue : 2
First page : ( 99) Last page : ( 102)
Print ISSN : 0974-4169. Online ISSN : 0974-4150.
Article DOI : 10.5958/0974-4150.2019.00022.1

Activation Parameter and Solvent effect on solvolysis of Ethyl benzoate in Aquo-organic Solvent System

Singh A.K.*

Department of Chemistry, (CCSIT), Teerthanker Mahaveer University, Moradabad, India

*Corresponding Author E-mail:

Online published on 15 May, 2019.


The rate of solvolysis of ethyl benzoate was estimated volumetrically over the temperature range of 20°c to 40°c.in water-methanol mixture at different composition. The depletion and enhancement in value of isocomposition activation energy and iso-dielectric activation shows solvation in transition state and de-solvation in initial state respectively. The effect of solvent on reaction rate was tested in term of activation parameter. Simultaneous decrease in values of δH* and δS* with increase in value of δG* with solvent composition show that the reaction is Enthalpy domination and Entropy controlled. There is weak interaction between solvent and solute because the values of iso-kinetic temperature is less than 300 K/Mole2



Ethyl benzoate, water-methanol Activation parameter, Solvent effect, solvent-solute interaction, Iso-kinetic temperature, specific and non specific salvation. Solvation in initial and transition state. Barclay-Butler rule.


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