Electrometric Study on Cu(Il), Hg(Il) and Ag(l) Complexes of lsopropylmercaptan and Determination of their Solubility Products

Department of Chemistry, Malaviya Regional Engineering College, Jaipur, India Manuscript received 29 September 1977, accepted 21 November 1977. The complexation of copper (Cu+2), mercury (Hg+2) and silver (Ag+) ion with isopropylmercaptan has been studied in 25% (V/V) ethanolic media employing potentio­metric, conductometric and amperometric titration techniques. Copper and mercury ions from 1 : 2 complex while silver ion shows the formation of 1 : 1 complex. Equilibrium constants and solubility products of these complexes have been evaluated by Ringbom's method at 10°, 20° and 30°. The overall changes in thermodynamic functions \(\bigtriangleup\)G, \(\bigtriangleup\)H and \(\bigtriangleup\)S accompanying complexation have also been determined at 20° with the help of an isobar and Gibb's Helmholtz equation