Masters Theses

Abstract

"The kinetics of the isotopic exchange reaction between O¹⁸-enriched chromate ion and solvent water have been measured as a function of pH and chromate ion concentration. The exchange kinetics can be explained in terms of the dimerization equilibria HCrO4̄ + Cr₂O[subscript 7 with double dash above] [double arrows] Cr₂O[subscript 7 with double dash above] + OH⁻ and 2HCrO4̄ [double arrows] Cr₂O[subscript 7 with double dash above] + H₂O except at high pH, where it is independent of pH. Rate constants at 30ºC for the reactions of the dimerization equilibria and the first order reaction at the high pH have been evaluated from the exchange results. The activation energy of the exchange at pH 8.70 and 1.15M̲ chromate ion is 11,400 cal mole⁻¹. The reaction proceeds faster in D₂O with RD/RH equal to 1.64 at pH 7.2. The experimental results are compared with the values obtained by other investigators"--Abstract, page ii.

Advisor(s)

McDonald, H. O. (Hector O.)

Committee Member(s)

Hanna, Samir B.
Ho, C. Y. (Chung You), 1933-1988

Department(s)

Chemistry

Degree Name

M.S. in Chemistry

Publisher

University of Missouri--Rolla

Publication Date

1970

Pagination

vii, 39 pages

Note about bibliography

Includes bibliographical references (pages 29-30).

Rights

© 1970 James Hsiao-Hsin Chiang, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Chemical kinetics -- Mathematical modelsHydrogen-ion concentration

Thesis Number

T 2523

Print OCLC #

6032541

Electronic OCLC #

871702687

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