Mercury-Mercurous Propionate Electrode Standard Potentials at different Temperatures and related Thermodynamic Quantities in Ethanol-Water Media
| Main Authors: | D. C. BHATTACHARYYA, S. K. SARKAR, A. K. BASU |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 1990
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/6216476 |
Daftar Isi:
- Department of Chemistry, Bashirhat College, Bashirhat, 24 Parganas Physical Chemistry Section, Department of Chemical Technology, Calcutta University, 92 Acharya Prafulla Chandra Road, Calcutta-700 009 Department of Chemistry, Midnapur College, Midnapur Manuscript received 3 April 1989. revised 13 February 1990, accepted 1 May 1990 Electromotive force measurements were made of cells of the type, Pt/H2 (g), \(\mid\) HOPr(m1), Na0Pr(m2 ) \(\mid\) Hg2,(0Pr)2, (S)/Hg Ethanol(X) Water (100-X) where X=10, 20, 30, 45, 60 and 75 mass% of ethanol at 15, 20, 25, 30 and 35° The cell has been used to calculate standard molal potentials (\(E^o_M\)/V) of the Hg/Hg2 (0Pr) (0Pr)- electrode and the related thermodynamic quantities for the transfer of HOPr from the aqueous standard state to the standard state in the respective mixed solvents. The values of \(E^o_m\) as a function of celsius temperature t, in different solvent composition have been determined. The dependence of the standard potentials at 25° on the dielectric constant of the media (in the light of Born equation), the volume fraction (\(\oslash\)w) and the mole fraction (NW) of water (based on Feakins-French relationship) has been examined. The variations of the thermodynamic quantities \(\bigtriangleup\)Go,\(\bigtriangleup\) so and \(\bigtriangleup\)H° with various parameters associated with the solvent media have also been examined.