Abstract
The speed of sound of mixtures of the six possible combinations of the major sea salt ions (Na+, Mg2+, Cl-, and SO4 2-) have been determined at I=3.0 and at 25°C. The results have been used to determine the changes in the adiabatic compressibility of mixing ΔKm the major sea salts. The values of ΔKm have been fit to the equation ΔKm=y2y3I2[k0+k1(1-2y3)] where yi is the ionic strength fraction of solute i, k0 and k1 are parameters related to the interactions of like-charged ions. The Young cross-square rule is obeyed to within ±0.04×10-6 cm3-kg-1-bar-1. A linear correlation was found between the compressibility k0 and volume v0 interaction parameters (104k0=-0.24+3.999 v0, s=0.15) in agreement with out earlier findings. Estimates of the sound speeds for the cross square mixtures (NaCl+MgSO4 and MgCl2+Na2SO4) were made using the equations of Reilly and Wood. The estimated sound speeds were found to agree on the average with the measured values to ±0.36 m-sec-1.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 853-864 |
| Number of pages | 12 |
| Journal | Journal of Solution Chemistry |
| Volume | 14 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 1985 |
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Keywords
- aqueous electrolytes
- compressibility
- MgCl
- MgSO
- NaSO
- NaCl
- sea salts
- Speed of sound
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
Cite this
The PVT properties of concentrated aqueous electrolytes. IV. Changes in the compressibilities of mixing the major sea salts at 25°C. / Millero, Frank J; Lampreia, M. Isabel.
In: Journal of Solution Chemistry, Vol. 14, No. 12, 12.1985, p. 853-864.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The PVT properties of concentrated aqueous electrolytes. IV. Changes in the compressibilities of mixing the major sea salts at 25°C
AU - Millero, Frank J
AU - Lampreia, M. Isabel
PY - 1985/12
Y1 - 1985/12
N2 - The speed of sound of mixtures of the six possible combinations of the major sea salt ions (Na+, Mg2+, Cl-, and SO4 2-) have been determined at I=3.0 and at 25°C. The results have been used to determine the changes in the adiabatic compressibility of mixing ΔKm the major sea salts. The values of ΔKm have been fit to the equation ΔKm=y2y3I2[k0+k1(1-2y3)] where yi is the ionic strength fraction of solute i, k0 and k1 are parameters related to the interactions of like-charged ions. The Young cross-square rule is obeyed to within ±0.04×10-6 cm3-kg-1-bar-1. A linear correlation was found between the compressibility k0 and volume v0 interaction parameters (104k0=-0.24+3.999 v0, s=0.15) in agreement with out earlier findings. Estimates of the sound speeds for the cross square mixtures (NaCl+MgSO4 and MgCl2+Na2SO4) were made using the equations of Reilly and Wood. The estimated sound speeds were found to agree on the average with the measured values to ±0.36 m-sec-1.
AB - The speed of sound of mixtures of the six possible combinations of the major sea salt ions (Na+, Mg2+, Cl-, and SO4 2-) have been determined at I=3.0 and at 25°C. The results have been used to determine the changes in the adiabatic compressibility of mixing ΔKm the major sea salts. The values of ΔKm have been fit to the equation ΔKm=y2y3I2[k0+k1(1-2y3)] where yi is the ionic strength fraction of solute i, k0 and k1 are parameters related to the interactions of like-charged ions. The Young cross-square rule is obeyed to within ±0.04×10-6 cm3-kg-1-bar-1. A linear correlation was found between the compressibility k0 and volume v0 interaction parameters (104k0=-0.24+3.999 v0, s=0.15) in agreement with out earlier findings. Estimates of the sound speeds for the cross square mixtures (NaCl+MgSO4 and MgCl2+Na2SO4) were made using the equations of Reilly and Wood. The estimated sound speeds were found to agree on the average with the measured values to ±0.36 m-sec-1.
KW - aqueous electrolytes
KW - compressibility
KW - MgCl
KW - MgSO
KW - NaSO
KW - NaCl
KW - sea salts
KW - Speed of sound
UR - http://www.scopus.com/inward/record.url?scp=34250116647&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34250116647&partnerID=8YFLogxK
U2 - 10.1007/BF00646295
DO - 10.1007/BF00646295
M3 - Article
VL - 14
SP - 853
EP - 864
JO - Journal of Solution Chemistry
JF - Journal of Solution Chemistry
SN - 0095-9782
IS - 12
ER -