ISSN:
1572-8927
Keywords:
Activity coefficient
;
electrolyte mixtures
;
emf measurements
;
Harned rule
;
HCl-LiCl mixtures
;
hydrochloric acid
;
ion interactions
;
lithium chloride
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The activity coefficient of HCl (γA) in aqueous mixtures of HCl and LiCl was determined by emf measurements of cells without liquid junction at five values of the total ionic strength, namely 0.1, 0.5, 1.0, 2.0, and 3.0 mol-kg−1 (m), and at nine temperatures from 5 to 45°C. The ionic strength fraction (γB) of LiCl in the mixtures was varied from 0 to 0.9. The values of log γA were found to vary linearly with the molality of salt, in accordance with the ‘Harned rule,’ indicating that the properties of these mixtures are determined primarily by binary ionic interactions of the type H-Li and that ternary interactions are not significant even at I=3m. The results also support the suggestion of Robinson that the interaction parameter θH,Li is insensitive to temperature changes when I is less than 2m.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00646169
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