Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Phase-boundary potential in the two-liquid-phase (AgI + NaCl) system

Stepanov, V. P.[Victor P.], Kulik, N. P.[Nina P.]
J. Chem. Thermodyn. 2015, 90, 24-27
ABSTRACT
An electrochemical method has been developed for studying the Galvanic potential between two coexisting equilibrium phases of the molten (0.5 AgI + 0.5 NaCl) system. The method measures the electromotive force (emf) of a cell with two silver electrodes. The measurement was carried out from the melting point of the mixture to T = 1067 K to establish the Galvanic potential magnitude and its temperature dependency near the critical point of mixing. The behavior of the Galvanic potential in the vicinity of the critical temperature corresponded to those found for the interfacial tension between coexisting phases.
Compounds
# Formula Name
1 ClNa sodium chloride
2 AgI silver iodide
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • Triple point temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 2
  • Triple point temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 1
  • 2
  • Monotectic temperature, K ; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Crystal - 1
  • Air at 1 atmosphere
  • From e.m.f. measurements
  • 1
  • POMD
  • 1
  • 2
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • From e.m.f. measurements
  • 1