Afsar Naqvi, S.M. (1968) Investigations on electrochemical and thermodynamic properties of electrode-electrolyte systems. PhD thesis, Aligarh Muslim University.

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The present works relates to the investigations on five new silver electrode systems consisting of sparingly soluble compounds of the weak electrolytes. The standard electrode potential and the thermodynamic parameters such as standard enthalpy changes which reflect light on the electrochemical nature of the electrodes have been evaluated. The determination of standard electrode potentials (E°) confronts the following three crucial problems and needs proper solutions for obtaining accurate values of E° of various electrode systems. 1) How to obtain high order of accuracy in experimental measurements of potentials? 2) How to establish at the fastest speed the electrochemical equilibria between solid – solution components of an electrode system? 3) And, which of the extrapolation method should be chosen as the most appropriate one for a particular electrode system? All these three aspects have been given close attention in the present investigations. The precision instruments are used in the experimental measurements of potentials; new type of large area electrodes (sintered silver electrodes of porous nature) are exploited as support for the sparingly soluble electrode materials to accelerate the attainment of equilibrium and lastly, the most suitable method of extrapolation is chosen taking into consideration the weak nature of the electrolytes used in these electrode systems. With these precautions taken on the experimental and theoretical side, it is felt that the high order of accuracy has been achieved in the determination of E° as well as the thermodynamic constants of the electrodes reported here. The evaluation of standard potential and the thermodynamic parameters of silver oxalate, succinate, tartrate, citrate and phosphate electrodes constitute the main work of the thesis, while the survey of the past developments in the subject and the review and classification of various types of potentials and their definitions comprise the subsidiary work.

Item Type: Thesis (PhD)
Uncontrolled Keywords: Electrolyte system; thermodynamic property
Subjects: Electrodics and Electrocatalysis
Depositing User: Dr. N Meyyappan
Date Deposited: 13 Jun 2012 04:07
Last Modified: 13 Jun 2012 04:07

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