Accession Number:

ADA297630

Title:

Anodization of Copper Microelectrodes in a Complexing Medium: Determination of Stability Constants of Products.

Descriptive Note:

Technical rept. no. 1, 1 Jun 94-31 May 95,

Corporate Author:

NORTH CAROLINA STATE UNIV AT RALEIGH

Report Date:

1995-07-25

Pagination or Media Count:

43.0

Abstract:

A model is presented for the anodization of a metal electrode by normal pulse voltammetry in complexing medium. The analysis is based on analytical expressions for current during normal pulse voltammetry at a microelectrode. It is applied to the anodization of a copper microdisk electrode in aqueous chloride solutions. Optimization of the fit of the model to the data yields the overall formation constants of CuCl K1 and CuCl2 beta 2 as log K1 2.93 0.02, - 0.05, and log beta 2 5.54 0.12, - 0.17. These values agree with those found in the literature. The advantages of this analysis over traditional approaches which employ an approximation of small current are described. jg p.1

Subject Categories:

  • Inorganic Chemistry
  • Physical Chemistry
  • Electrical and Electronic Equipment
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE