The thermodynamic behavior of hydrogen bromide in aqueous solutions of barium bromide

Rabindra N. Roy, Lakshmi N. Roy, William B. Davis, David W. Larkin, Demara Willard, David A. Johnson, Frank J Millero

Research output: Contribution to journalArticle

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Abstract

The thermodynamic behavior of hydrogen bromide in aqueous mixtures of barium bromide as reflected in activity coefficients was studied at temperatures ranging from 278.15 K to 318.15 K at 10 K intervals and at constant ionic strengths ranging from 0.10 mol·kg-1 to 3.0 mol·kg-1. Electromotive-force measurements were made on the cell without liquid junction:. Pt|H2(g, p = 101.325 kPa)|HBr(mA), BaBr2(mB)|AgBr(s)|Ag(s). Activity coefficients of HBr were calculated from the observed e.m.f.s using the Nernst expression. The activity coefficients of HBr were analyzed using the treatment of Harned and also the comprehensive ion-interaction model of Pitzer. Activity coefficients for HBr in the salt mixture follow Harned's rule at ionic at ionic strengths up to 2.0 mol·kg-1. The Pitzer mixing parameters SΘH.Ba and ΨH.Ba.Br (including higher-order electrostatic effects) and ΘH.Ba and ΨH.Ba.Br (excluding higher-order effects) and their temperature derivatives have been determined and are compared with the results for similar systems. The activity coefficients and excess enthalpies for HBr and BaBr2 have also been calculated using Pitzer's formalism at the experimental temperatures and compared with the results of systems previously studied.

Original languageEnglish (US)
Pages (from-to)155-172
Number of pages18
JournalJournal of Chemical Thermodynamics
Volume25
Issue number1
DOIs
StatePublished - Jan 1993

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Hydrobromic Acid
Activity coefficients
Barium
Bromides
barium
bromides
Thermodynamics
aqueous solutions
Hydrogen
thermodynamics
hydrogen
coefficients
Ionic strength
Electromotive force
electromotive forces
Force measurement
Temperature
temperature
Electrostatics
Enthalpy

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Roy, R. N., Roy, L. N., Davis, W. B., Larkin, D. W., Willard, D., Johnson, D. A., & Millero, F. J. (1993). The thermodynamic behavior of hydrogen bromide in aqueous solutions of barium bromide. Journal of Chemical Thermodynamics, 25(1), 155-172. https://doi.org/10.1006/jcht.1993.1015

The thermodynamic behavior of hydrogen bromide in aqueous solutions of barium bromide. / Roy, Rabindra N.; Roy, Lakshmi N.; Davis, William B.; Larkin, David W.; Willard, Demara; Johnson, David A.; Millero, Frank J.

In: Journal of Chemical Thermodynamics, Vol. 25, No. 1, 01.1993, p. 155-172.

Research output: Contribution to journalArticle

Roy, RN, Roy, LN, Davis, WB, Larkin, DW, Willard, D, Johnson, DA & Millero, FJ 1993, 'The thermodynamic behavior of hydrogen bromide in aqueous solutions of barium bromide', Journal of Chemical Thermodynamics, vol. 25, no. 1, pp. 155-172. https://doi.org/10.1006/jcht.1993.1015
Roy, Rabindra N. ; Roy, Lakshmi N. ; Davis, William B. ; Larkin, David W. ; Willard, Demara ; Johnson, David A. ; Millero, Frank J. / The thermodynamic behavior of hydrogen bromide in aqueous solutions of barium bromide. In: Journal of Chemical Thermodynamics. 1993 ; Vol. 25, No. 1. pp. 155-172.
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