Seawater-A test of multicomponent electrolyte solution theories. I. The apparent equivalent volume, expansibility, and compressibility of artificial seawater

Frank J Millero

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21 Citations (Scopus)

Abstract

The apparent equivalent volume ΦV, expansibility ΦE, and compressibility ΦK of an artificial seawater solution containing 10 ionic components (Na+, Mg2+, Ca2+, K+, Sr2+, Cl-, SO4 2-, HCO3 -, Br-, and F-) and one nonionic component (H3BO3) has been determined from 0 to 40°C (in 5° intervals) and from 0.1 to 0.8 m ionic strength at 1 atm. The concentration dependence (Iv=volume ionic strength) of the ΦV's, ΦE's, and ΦK's have been examined by using a Masson-type equation, Φ = Φ° +S'IV 1/2, and a Redlich-type equation, Φ = Φ° +SIV 1/2 +BIV, where Φ° is the infinite-dilution value, S′ is the empirical Masson slope, S is the theoretical Debye-Hückel slope, and B is an empirical deviation constant. By using Young's rule, Φ = ∑Eiφ(i), the apparent equivalent volumes, expansibilities, and compressibilities for "sea salt" have been estimated from the ionic and nonionic components making up the mixture. The estimated apparent molal quantities agree very well with the directly measured values providing the concentration terms, Si and Bi, are weighted according to the methods of Wood and Reilly.

Original languageEnglish (US)
Pages (from-to)1-22
Number of pages22
JournalJournal of Solution Chemistry
Volume2
Issue number1
DOIs
StatePublished - Feb 1973

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Seawater
Ionic strength
Compressibility
Osmolar Concentration
Electrolytes
compressibility
Bovine Immunodeficiency Virus
electrolytes
Oceans and Seas
slopes
Dilution
Wood
Salts
dilution
salts
intervals
deviation

Keywords

  • Compressibility
  • expansibility
  • molar volume
  • seawater
  • Young's rule

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

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abstract = "The apparent equivalent volume ΦV, expansibility ΦE, and compressibility ΦK of an artificial seawater solution containing 10 ionic components (Na+, Mg2+, Ca2+, K+, Sr2+, Cl-, SO4 2-, HCO3 -, Br-, and F-) and one nonionic component (H3BO3) has been determined from 0 to 40°C (in 5° intervals) and from 0.1 to 0.8 m ionic strength at 1 atm. The concentration dependence (Iv=volume ionic strength) of the ΦV's, ΦE's, and ΦK's have been examined by using a Masson-type equation, Φ = Φ° +S'IV 1/2, and a Redlich-type equation, Φ = Φ° +SIV 1/2 +BIV, where Φ° is the infinite-dilution value, S′ is the empirical Masson slope, S is the theoretical Debye-H{\"u}ckel slope, and B is an empirical deviation constant. By using Young's rule, Φ = ∑Eiφ(i), the apparent equivalent volumes, expansibilities, and compressibilities for {"}sea salt{"} have been estimated from the ionic and nonionic components making up the mixture. The estimated apparent molal quantities agree very well with the directly measured values providing the concentration terms, Si ′ and Bi, are weighted according to the methods of Wood and Reilly.",
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AB - The apparent equivalent volume ΦV, expansibility ΦE, and compressibility ΦK of an artificial seawater solution containing 10 ionic components (Na+, Mg2+, Ca2+, K+, Sr2+, Cl-, SO4 2-, HCO3 -, Br-, and F-) and one nonionic component (H3BO3) has been determined from 0 to 40°C (in 5° intervals) and from 0.1 to 0.8 m ionic strength at 1 atm. The concentration dependence (Iv=volume ionic strength) of the ΦV's, ΦE's, and ΦK's have been examined by using a Masson-type equation, Φ = Φ° +S'IV 1/2, and a Redlich-type equation, Φ = Φ° +SIV 1/2 +BIV, where Φ° is the infinite-dilution value, S′ is the empirical Masson slope, S is the theoretical Debye-Hückel slope, and B is an empirical deviation constant. By using Young's rule, Φ = ∑Eiφ(i), the apparent equivalent volumes, expansibilities, and compressibilities for "sea salt" have been estimated from the ionic and nonionic components making up the mixture. The estimated apparent molal quantities agree very well with the directly measured values providing the concentration terms, Si ′ and Bi, are weighted according to the methods of Wood and Reilly.

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