Thermodynamic Investigation of Sodium Nitrate in N,N-dimethylformamide Aqueous Mixtures Based on Potentiometric Measurements at T = (298.2, 303.2, and 308.2) K

In this work, thermodynamic properties of ternary (NaNO3 + DMF + water) system were reported using the potentiometric method. The electromotive force measurements were performed on the galvanic cell of the type: NO_3 - ISE| NaNO_3( m ),DMF( w%),H_2O (1 - w)%|Na - ISE , in various mixed solvent systems containing 0, 5, 10, 15 and 20 γ_± ,φ , G^E/ . -0ptnRT, H^E/ . -0ptnRT and S^E/ . -0ptnR . Also, Scatchard parameters were used to calculate γ_N^( 2)/ . -0ptγ_N^( 1) for the whole series of under investigation system.