The electromotive forces of the cells glass electrode(Na)NaIAgI, Ag in methanol + n-propanol (MeOH + n-PrOH), methanol + iso-propanol (MeOH + i-PrOH) and n-propanol + n-butanol (n-PrOH + n-BuOH) were measured at 298.15 K. The values of standard emf of the cells and the Gibbs energies of transfer of NaI DELTAG(t)0 were determined taking into consideration ion-pair formation. The enthalpies of transfer of the electrolyte were calculated using the standard enthalpies of solution of NaI obtained earlier. The values of the entropies of transfer were also obtained. The usefulness of glass sodium electrodes for thermodynamic studies of electrolyte solutions in a system containing two-component organic mixtures was evaluated and discussed.