Accession Number:

AD0619756

Title:

THE ION ACTIVITY FUNCTION--AN APPROACH TO THE STUDY OF ELECTROLYTE BEHAVIOR IN CONCENTRATED SOLUTIONS I. THE SYSTEMS LIC1-H20 AND LIBR-H20,

Descriptive Note:

Corporate Author:

ROYAL INST OF TECH STOCKHOLM (SWEDEN)

Personal Author(s):

Report Date:

1962-08-22

Pagination or Media Count:

8.0

Abstract:

An approach to behavior in concentrated electrolytes is presented. Utilizing the fact that a unique ion activity function was obtained for H30 in several strong acids it was possible to calculate ion activity and ion activity coefficient for the ions in the systems LiC1--H20 and LiBr--H20 over a wide composition range. The results indicate that free Li carries about three water molecules even in the most concentrated solutions and C1- and Br- are unhydrated in the region 12 m to saturation. The decrease in activity functions for C1- and Br- seen in the highest concentrations of the salt solutions is interpreted as due to ion-pair formation. It is assumed that the ion activity coefficient function of C1- and Br- would be constant in the high salt concentration if no ionpairing occurred and deviations permit the calculation of approximate values for the degree of dissociation of the ion pair.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE