MEAN MOLAL STOICHIOMETRIC ACTIVITY COEFFICIENTS OF ALKALI HALIDES AND RELATED ELECTROLYTES IN HYDROTHERMAL SOLUTIONS.

S. A. Wood, D. A. Crerar, Susan Louise Brantley, M. Borcsik

Research output: Contribution to journalArticle

49 Scopus citations

Abstract

The mean molal stoichiometric activity coefficients have been measured for NaCl at 325 and 350 degree C and for KCl and CaCl//2 from 200 to 350 degree C using the static vapor pressure method. Differential vapor pressure measurements made using a strain-gauge transducer proved to be rapid and accurate. A simple method is presented that factors the activity coefficient into three parts corresponding to long-range electrostatic ion-ion interactions, hydration, and association; this reproduces experimental values with reasonable accuracy. Refs.

Original languageEnglish (US)
Pages (from-to)668-705
Number of pages38
JournalAmerican Journal of Science
Volume284
Issue number6
DOIs
StatePublished - Jan 1 1984

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences(all)

Cite this