Standard potential determinations for the magnesium and magnesium amalgam electrodes and conductance data for magnesium salts in selected aprotic solvents

Abstract

Standard potentials for the magnesium and magnesium amalgam electrodes relative to the silver electrode have been determined in dimethylformamide (DMF), propylene carbonate (PC) and acetonitrile (AN) solutions at ambient temperature (295 ± 2K) from emf measurements obtained using both stationary pool and flowing amalgam electrodes. Specific and molar conductance data are also presented for MgCl 2 and Mg(ClO 4) 2 solutions in DMF, PC, AN and γ-butyrolactone (BL) at 295 K and 233 K. On the basis of the molar conductance data for PC/MgCl 2 and BL/MgCl 2 solutions, the formation of magnesium halide-bridged polymeric species is proposed.