Journal of Chemistry

Electrochemical behavior of hydroquinone-quinone redox system in cationic medium

Author & Affiliation:
N. Ramalakshmi (rrama_subhar@yahoo.co.in)
Department of Chemistry, Presidency College, Chennai- 600005 (INDIA)
B. Marichamy
Department of Chemistry, Presidency College, Chennai- 600005 (INDIA)
Keyword:
cyclic voltammetry, glassy carbon electrode, hydroquinone-quinone redox system, lithium, sodium, potassium as ionic medium.
Issue Date:
April 2010
Abstract:

Electrochemistry of H2Q/Q redox species in different medium is studied by cyclic voltammetric technique. The voltammograms show single anodic and cathodic peaks except in lithium medium. The peak separation shows that it undergoes quasi reversible diffusion controlled with slow electron transfer which is the rate determining step. The reaction takes place at the pH range of 5.3 to 4.9 in chosen cationic medium. Kinetic parameter such as the rate constant and diffusion coefficients are presented. The adsorption on the electrode surface made stable modification. The cathodic peak currents is varies in the order K+>Li+ >Na+ and anodic peak current Li+>K+ >Na+ and anodic peak potential vary in the following Li+ >Na+ >K+ . Analytically Li+ is the best medium among the cationic medium chosen for the present study.

 

Pages:
35-56
ISSN:
2319-8036 (Online) - 0973-3450 (Print)
Source:
DOI:
juc

Copy the following to cite this article:

N. Ramalakshmi; B. M., "Electrochemical behavior of hydroquinone-quinone redox system in cationic medium", Journal of Ultra Chemistry, Volume 6, Issue 1, Page Number 35-56, 2018

Copy the following to cite this URL:

N. Ramalakshmi; B. M., "Electrochemical behavior of hydroquinone-quinone redox system in cationic medium", Journal of Ultra Chemistry, Volume 6, Issue 1, Page Number 35-56, 2018

Available from: http://www.journalofchemistry.org/paper/631/

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