A study of solvent effects on the reaction between p-nitrobenzyl chloride and hydroxide ion in aqueous dioxane homogeneous media

Author

Ken K. Ho

Abstract

"The kinetics and activation parameters of the reaction between p̲, p̲' - dinitrostilbene quantitatively, have been studied in five aqueous dioxane solvent systems at five different temperatures between 20⁰ and 40⁰C. At any one temperature the second-order rate constants are minimum in the 30% dioxane solvent mixture, reach a maximum in the 50% dioxane systems, and fall off slightly in the 60% and 70% dioxane systems. The Arrhenius activation energies are highest in the 30% dioxane and lowest in the 70% dioxane systems. The free energies of activation change in the same direction but the magnitude of change is much less than that for E_a or ΔH*. The greatest variation is shown in the entropies of activation: 14.4 e.u. in the 30% aqueous dioxane solvent mixture and only 2.5 e.u. in the 70% system. The significance of these results is discussed in terms of specific solute-solvent interactions, dielectric constants, and variations in the activities of hydroxide ion with variations in the solvent composition"--Abstract, page vi.

Advisor(s)

Hanna, Samir B.

Committee Member(s)

Venable, Raymond L., 1935-2008
Hill, Otto H.

Department(s)

Chemistry

Degree Name

M.S. in Chemistry

Publisher

University of Missouri--Rolla

Publication Date

1968

Pagination

vi, 71 pages

Rights

© 1968 Ken K. Ho, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Chemical reactionsDioxaneSolvents

Thesis Number

T 2135

Print OCLC #

19319151

Electronic OCLC #

794234076

Recommended Citation

Ho, Ken K., "A study of solvent effects on the reaction between p-nitrobenzyl chloride and hydroxide ion in aqueous dioxane homogeneous media" (1968). Masters Theses. 5185.
https://scholarsmine.mst.edu/masters_theses/5185