caa a22 4500 477139159 CHVBK 20180405111727.0 cr unu---uuuuu 170330e19971201xx s 000 0 eng 10.1023/A:1022981107236 doi (NATIONALLICENCE)springer-10.1023/A:1022981107236 Thermodynamics of NaCl in Aqueous Ethylene Glycol, Acetonitrile, and 1,4-Dioxane Mixtures from Emf Measurements at 25°C [Elektronische Daten] [Paolo Ceccattini, Patrizia Mussini, Torquato Mussini] The electromotive force of the amalgam cell {NaxHg1-x‖NaCl(m)‖AgCl‖Ag} has been measured at 25°C as a function of the mole fraction x of Na in amalgams and of the molality m of NaCl in (ethylene glycol + water), (acetonitrile + water), and (1,4-dioxane + water) mixed solvents, containing up to 0.8 mass fraction of the organic component, with relative permittivities ε ≥ 27. The relevant standard molal electromotive forces $$E_{\text{m}}^ \circ $$ have been determined, together with the mean molal activity coefficient γ± of NaCl as a function of its molality. In the case of (ethylene glycol + water) mixtures, a linear dependence of $$E_{\text{m}}^ \circ $$ on the mass fraction of ethylene glycol is observed, which is quite unusual, The Debye-Hückel equation is applicable successfully over the whole range of molalities explored, which extends to the vicinity of the solubility limit of NaCl in each solvent. The dependence of the standard emf on the logarithm of the volume fraction of water in the aqueous-organic solvent mixtures have been analyzed in terms of Feakins and French's theory, leading to a primary hydration number 7.2 for NaCl, in good agreement with previous results employing different methods. Plenum Publishing Corporation, 1997 Electrochemical thermodynamics nationallicence standard emfs nationallicence standard potentials nationallicence activity coefficients nationallicence nonaqueous solvents nationallicence mixed solvents nationallicence aqueous-organic solvent mixtures nationallicence hydration numbers nationallicence amalgam electrode nationallicence Ceccattini Paolo Department of Physical Chemistry and Electrochemistry, University of Milan, Via Golgi 19, 20133, Milano, Italy aut Mussini Patrizia Department of Physical Chemistry and Electrochemistry, University of Milan, Via Golgi 19, 20133, Milano, Italy aut Mussini Torquato Department of Physical Chemistry and Electrochemistry, University of Milan, Via Golgi 19, 20133, Milano, Italy aut Journal of Solution Chemistry Kluwer Academic Publishers-Plenum Publishers 26/12(1997-12-01), 1169-1186 0095-9782 26:12<1169 1997 26 10953 https://doi.org/10.1023/A:1022981107236 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1022981107236 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ceccattini Paolo Department of Physical Chemistry and Electrochemistry, University of Milan, Via Golgi 19, 20133, Milano, Italy aut NATIONALLICENCE 700 1- Mussini Patrizia Department of Physical Chemistry and Electrochemistry, University of Milan, Via Golgi 19, 20133, Milano, Italy aut NATIONALLICENCE 700 1- Mussini Torquato Department of Physical Chemistry and Electrochemistry, University of Milan, Via Golgi 19, 20133, Milano, Italy aut NATIONALLICENCE 773 0- Journal of Solution Chemistry Kluwer Academic Publishers-Plenum Publishers 26/12(1997-12-01), 1169-1186 0095-9782 26:12<1169 1997 26 10953 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer