Abstract
Mercury-mercury (II) sulphide electrode has been prepared and its electrochemical and thermodynamic behaviour has been studied in different media. The electrode is found to show Nernstian response to pS (− log [S2−]) over the range 5.19–10.38. In the pH range 7.96–11.98, at constant [S2−]v, its response is also Nernstian. The values of thermodynamic functions, viz., ΔG0. ΔH0, and ΔS0 for the electrode reaction: Hg(3)+S2− aμ ⇌HgS(s)+2e, have been determined. Further, the standard free energy of formation (ΔG 0f ) and solubility product constant (K vp ) of HgS in aqueous medium at 25±0.1°C have also been determined.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Daniels F and Alberty R A 1966Physical chemistry (New York: John Wiley & Sons) p. 47
Goates J R. Cole A G, Gray E L and Faux N D 1951aJ. Am. Chem. Soc. 73 707
Goates J R, Cole A G and Gray E L 1951bJ. Am. Chem. Soc. 73 3596
Glasstone G 1947Thermodynamics for chemists Third East-West Reprint, 1969 (New York: Van Nostrand Reinhold) p. 506
Ju Lurie 1975Handbook of analytical chemistry (Moscow: Mir Publishers) p. 110
Laitinen H A and Hseu T M 1979Anal. Chem. 51 1550
Lange’s handbook of chemistry 1979 (ed.) J A Dean (New York: McGraw-Hill)
Sharma P and Singh M 1982aIndian J. Chem. A21 259, 847
Sharma P and Singh M 1982bProc. Indian Acad. Src. (Chem. Sci.)91 527
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Katiyar, P.C., Singh, M. Studies on the electrochemical and thermodynamic behaviour of Hg-HgS electrode in the presence of sulphide ions. Proc. Indian Acad. Sci. (Chem. Sci.) 100, 345–351 (1988). https://doi.org/10.1007/BF02840545
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02840545