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Thermodynamics of the cell: {NaxHg1−x|NaCl(m)|AgCl|Ag} in (methanol+water) solvent mixtures

✍ Scribed by Alessandro Basili; Patrizia R. Mussini; Torquato Mussini; Sandra Rondinini

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
423 KB
Volume
28
Category
Article
ISSN
0021-9614

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✦ Synopsis

The electromotive force E of the cell {NaxHg1-x =NaCl(m)=AgCl=Ag} has been measured at the temperature 298.15 K as a function of the mole fraction x of Na metal in amalgams and of the molality m of NaCl in (methanol + water) solvent mixtures containing up to 0.8 mass fraction of methanol, with relative permittivities o e 40. The respective standard electromotive forces E°m have been determined, together with the activity coefficients g2 of NaCl as a function of its molality. For interpolation purposes the E°m values can be expressed as a function of the methanol mass fraction wM by the following polynomial, valid for 0 E wM E 0.8:

These results for standard e.m.f.s. lead to a primary hydration number nhydr 1 7 for NaCl which is in good agreement with previous results using different methods.

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