Abstract
The electromotive force of the buffered cell: Pt, H
2 (gas, 1 atm): HOAc (
m
1), KOAc (
m
2), KI (
m
3), solvent: AgI, Ag, in propylene glycol (PG) and in 19 PG + water solvent mixtures has been measured at 5°C intervals from 0 to 55°C. The values of the standard potentials of the silver-silver iodide electrode have been determined in these solvents at the indicated temperatures. The standard potential in each solvent has been expressed as a function of temperature. The standard thermodynamic functions for the cell reaction and the standard thermodynamic quantities for the transfer of 1 mole of HI from water to the respective solvents have been evaluated. The results are interpreted in terms of the acid-base properties of the solvents as well as the preferential solvation of ions.