In:
Canadian Journal of Chemistry, Canadian Science Publishing, Vol. 66, No. 4 ( 1988-04-01), p. 637-644
Abstract:
This paper reports electromotive force measurements of the cells[Formula: see text]and[Formula: see text] in mixed solvents of urea, mole fraction x = 0.05, at five temperatures from 278.15 to 318.15 K. The standard potentials of Ag–AgCl electrode in mixed solvents were obtained from the emf of cell (A) for HCl of molality m A from 0.02 to 0.11 mol kg −1 , both by extrapolation on the basis of an extended Debye–Hückel equation and by a polynomial approach proposed in this paper on the basis of Pitzer's electrolytic solution theory. The standard free energies of transfer for HCl are discussed. The activity coefficients of HClγ A in HCl + NaCl + urea + water have also been obtained from the emf of cell (B) at constant total ionic strength I = 0.5, 1.0, 1.5, and 2.0 mol kg −1 . The experimental results show that HCl obeys Harned's rule and log γ A is a linear function of absolute temperature T. They also indicate that the relative partial molar enthalpy of HCl obeys a similar Harned's rule.
Type of Medium:
Online Resource
ISSN:
0008-4042
,
1480-3291
Language:
English
Publisher:
Canadian Science Publishing
Publication Date:
1988
detail.hit.zdb_id:
1482256-8
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