Anodic dissolution of zinc in potassium bromide-potassium bromate solutions

Author

Ying-cheh Chuang

Abstract

"The purpose of this investigation was to study the anodic dissolution of zinc at a temperature of 25°C in Br⁻-BrO₃; solutions. In Br⁻ solutions, it was found that the apparent valences of zinc ions going into solution were approximately the normal value of two. Smaller values were obtained in BrO⁻₃ solutions, with the most pronounced changes occurring in the higher concentrations of BrO⁻₃. An empirical equation was derived relating the apparent valence (z_i) to the current density (amp·cm⁻²) and BrO⁻₃ concentration (gmol/liter): 2- z_i = 3.11 X i⁰̇̇¹³(C_BrO⁻₃)⁰̇⁵⁷ The mechanism for the dissolution of zinc was proposed as follows: Zn(s) + H₂O(aq) = Zn(OH) (s) + H⁺(aq) + e [return] Zn(OH) (s) = ZnO(s) + H⁺ (aq) + e [return] ZnO(s) + H₂O(aq) = Zn(OH)₂ (s) (r.d.s.) [return] Zn (OH)₂ (s) = Zn⁺² (aq) + 2 OH⁻ (aq)"--Abstract, Page ii.

Advisor(s)

Johnson, James W., 1930-2002

Committee Member(s)

James, William Joseph
O'Keefe, Thomas J.

Department(s)

Chemical and Biochemical Engineering

Degree Name

M.S. in Chemical Engineering

Sponsor(s)

University of Missouri--Rolla. Materials Research Center

Publisher

University of Missouri--Rolla

Publication Date

1970

Pagination

x, 75 Pages

Note about bibliography

Includes bibliographical references (pages 46-50).

Rights

© 1970 Ying-cheh Chuang, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Zinc -- Anodic oxidationElectrolytic oxidationPotassium bromideBromate

Thesis Number

T 2333

Print OCLC #

6013597

Electronic OCLC #

843115476

Recommended Citation

Chuang, Ying-cheh, "Anodic dissolution of zinc in potassium bromide-potassium bromate solutions" (1970). Masters Theses. 7040.
https://scholarsmine.mst.edu/masters_theses/7040