Pseudo-first Order Rate Constants and Thermodynamic Parameters for  Esters Hydrolysis in Neutral Medium

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Title:	Pseudo-first Order Rate Constants and Thermodynamic Parameters for Esters Hydrolysis in Neutral Medium
Authors:	SHAKILA BEGUM M. AURANG ZEB NAEEM PIRZADA
Issue Date:	4-Dec-2000
Publisher:	Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi
Citation:	Begum, S. H. A. K. I. L. A., Zeb, M. A., & Pirzada, N. A. E. E. M. (2000). Pseudo-first order rate constants and thermodynamic parameters for esters hydrolysis in neutral medium. JOURNAL-CHEMICAL SOCIETY OF PAKISTAN, 22(4), 255-259.
Abstract:	A comprehensive study of the Pseudo-first order rate constants K-0 (sec(-1)) for uncatalysed reaction and the thermodynamic parameters for alkyl formates HCOOR in neutral medium in the temperature range (293-343 K) has been undertaken The fi ee energies, enthalpies and entropies of activation were measured according to the theory of absolute reaction rates. The enthalpies and entropies of activation decreased from methyl to ethyl formates whereas the DeltaS(#) and DeltaH(#) values obtained for isopropyl formate were approximately the same as that for ethyl formate indicating that further substitution at the proportional to -C atom did not produce any further significant intramolecular polarization. The A(AL)1 mechanism was operative in neutral hydrolysis of esters.
URI:	http://142.54.178.187:9060/xmlui/handle/123456789/19551
ISSN:	0253-5106
Appears in Collections:	Issue 04

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