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Materials, Methods & Technologies, Volume 8, 2014

TRANSFERENCE NUMBER AND CONDUCTANCE STUDIES OF SODIUM CHLORIDE IN AQUEOUS MIXTURES OF ETHANOL AT 298.15 K
Renato Tomas, Vesna Sokol, Perica Boskovic, Zeljana Peko
Pages: 518-525
Published: 2 Jun 2014
Views: 1457
Downloads: 1445
Abstract: Transference numbers of sodium ion constituent were determined at 298.15 K from the potential difference measurements of the cell with liquid junction, at various sodium chloride molalities against fixed molality in aqueous mixtures of ethanol (containing 20 and 40 mass % ethanol) by using literature data for the activity coefficient. Molar conductivities of sodium chloride were determined in both mixtures and treated by the Lee-Wheaton equation to obtain their limiting value. Limiting transference number of the sodium ion, obtained by extrapolation to zero-molarity, serves to derive ionic conductivities.
Keywords: transference numbers, ionic conductivities, sodium chloride, ethanol + water mixtures, potentiometry, conductometry
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