Seawater—A test of multicomponent electrolyte solution theories. I. The apparent equivalent volume,expansibility, and compressibility of artificial seawater |
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Authors: | Frank J Millero |
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Institution: | (1) Rosenstiel School of Marine and Atmospheric Science, University of Miami, 33149 Miami, Florida |
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Abstract: | The apparent equivalent volume V, expansibility E, and compressibility K of an artificial seawater solution containing10 ionic components (Na+, Mg2+, Ca2+, K+, Sr2+, Cl–, SO
4
2–
, HCO
3
–
, Br–, and F–) and one nonionic component (H3BO3) has been determined from0 to40°C (in5° intervals) and from0.1 to0.8 m ionic strength at1 atm. The concentration dependence (Iv=volume ionic strength) of the V's, E's, and K's have been examined by using a Masson-type equation, = ° +S'I
V
1/2, and a Redlich-type equation, = ° +SI
V
1/2 +BI
V, where ° 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, = Ei(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, S
i
and Bi, are weighted according to the methods of Wood and Reilly.Contribution Number 1599 from the University of Miami. |
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Keywords: | Compressibility expansibility molar volume seawater Young's rule |
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