سال انتشار: ۱۳۹۰

محل انتشار: سومین کنفرانس تخصصی ترمودینامیک

تعداد صفحات: ۵

نویسنده(ها):

Bahram Ghalami-Choobar – Department of Chemistry, Faculty of Science, University of Guilan, P.O.Box:19141, Rasht, Iran
Fatemeh Sayyadi Nodehi –

چکیده:

In this work, the thermodynamic properties of the mixed electrolyte [(1-y)NaCl+y NaNO3] in mixed (formamide +water) system ,using the potentiometric method, are reported. The potentiometric measurements were carried out on the galvanic cells without liquid junction of the type: Na–ISE / NaCl (m1), NaNO3 (m2), (100-w%) H2O +w% HCONH2 / Ag-AgCl, Na–ISE / NaNO3 (m1), (100-w %) H2O +w% HCONH2 / NO3–ISE over total ionic strengths from 0.001 to 4.000 mol. kg-1 for different series of salt molal ratios r (r = mNaCl/mNaNO3 =0.1, 1, 2.5, 5.0, 10.0) and pure NaCl in mixed solvent system containing 10% mass fraction of formamide at T=298.2 K. The results obtained were interpreted by using Pitzer ion-interaction model.