Search

The emf of the cell: Ag, AgCl, NaCl(m)⋮Na 2 CrO 4 (m/2), Ag 2 CrO 4 , Ag in water + 10, + 20, + 30, and + 40 mass percent of dioxane has been measured at 5°C intervals over the temperature range 15–45°C. The values of the standard potentials of the silver—silver chromate electrode have been determined in these mixed solvent media at these temperatures. The standard thermodynamic quantities (Δ G °, Δ H °, and Δ S °) for the cell reaction in water + dioxane mixtures have been evaluated at these temperatures. The results are discussed in terms of the preferential solvation of the ions.