TY - JOUR
T1 - Transitions in the speed of sound in concentrated aqueous electrolyte solutions
AU - Millero, Frank J.
AU - Fernandez, Marino
AU - Vinokurova, Faina
PY - 1985/1/1
Y1 - 1985/1/1
N2 - Precise sound speed measurements on concentrated aqueous solutions of LiCl, MgCl2, CaCl2, SrCl2, and BaCl2 show positive transitions. These transitions occur respectively at 10.7 ± 0.7, 3.8 ± 0.6, 5.9 ± 0.5, 2.1 ± 0.2, and 0.9 ± 0.4 m for LiCl, MgCl2, CaCl2, SrCl2, and BaCl2 solutions. No transitions were found in the densities of these solutions. These transitions may be attributed to changes in the hydration structure around the cations. Since the sound speeds increase, the adiabatic compressibilities and partial molal compressibilities will decrease at the transition. This would lead to an increase in the hydration numbers, if one uses a simple model for the water structure around the ions.
AB - Precise sound speed measurements on concentrated aqueous solutions of LiCl, MgCl2, CaCl2, SrCl2, and BaCl2 show positive transitions. These transitions occur respectively at 10.7 ± 0.7, 3.8 ± 0.6, 5.9 ± 0.5, 2.1 ± 0.2, and 0.9 ± 0.4 m for LiCl, MgCl2, CaCl2, SrCl2, and BaCl2 solutions. No transitions were found in the densities of these solutions. These transitions may be attributed to changes in the hydration structure around the cations. Since the sound speeds increase, the adiabatic compressibilities and partial molal compressibilities will decrease at the transition. This would lead to an increase in the hydration numbers, if one uses a simple model for the water structure around the ions.
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U2 - 10.1021/j100253a002
DO - 10.1021/j100253a002
M3 - Article
AN - SCOPUS:0000871907
VL - 89
SP - 1062
EP - 1064
JO - Journal of Physical Chemistry
JF - Journal of Physical Chemistry
SN - 0022-3654
IS - 7
ER -