Temperature dependence of intermolecular correlations in bulk water and electrolyte solutions

2020 ◽  
Author(s):  
Y. Chen ◽  
N. Dupertuis ◽  
H. I. Okur ◽  
S. Roke
Keyword(s):  
Temperature Dependence ◽  
Electrolyte Solutions ◽  
Bulk Water

The Temperature Dependence of the Electrical Conductivity Activation Energy of the of Aqueous Electrolyte Solutions

2021 ◽  
Vol 1031 ◽  
pp. 228-233
Author(s):  
Yuliya M. Artemkina ◽  
Vladimir V. Shcherbakov ◽  
Irina A. Akimova
Keyword(s):  
Activation Energy ◽  
Aqueous Solution ◽  
Temperature Dependence ◽  
Aqueous Electrolyte ◽  
Electrolyte Solutions ◽  
Temperature Step ◽  
Conductivity Activation Energy ◽  
Intermolecular Hydrogen Bonds ◽  
Optimal Value ◽  
Increasing Temperature

The procedure for determining the activation energy of conductivity Еκ is analyzed depending on the temperature step ΔT. It is shown that with increasing ΔT, the error in the calculation of Eκ decreases, but the calculated value of Eκ decreases. In order not to lose the temperature dependence of the activation energy, it is necessary to choose the optimal value of Δt. In our opinion, this value should not exceed 5 – 10 °C. Taking into account the decrease in concentration with increasing temperature due to a decrease in density has virtually no effect on the accuracy of determining Eκ, provided that ΔT is 5 – 10 °C. It has been shown that in the temperature range 20 – 80 °C, the activation energy of conductivity decreases with increasing temperature. This decrease is due to the rupture of intermolecular hydrogen bonds of the solvent with increasing temperature. It was suggested that the movement of ions in an aqueous solution may be accompanied by the breaking of hydrogen bond of the solvent.

Temperature Dependence of the Conductivity of Electrolyte Solutions

Nature ◽  
1958 ◽  
Vol 182 (4648) ◽  
pp. 1532-1533 ◽  
Author(s):  
N. VAN MEURS
Keyword(s):  
Temperature Dependence ◽  
Electrolyte Solutions

scholarly journals Electrolytes induce long-range orientational order and free energy changes in the H-bond network of bulk water

2016 ◽  
Vol 2 (4) ◽  
pp. e1501891 ◽  
Author(s):  
Yixing Chen ◽  
Halil I. Okur ◽  
Nikolaos Gomopoulos ◽  
Carlos Macias-Romero ◽  
Paul S. Cremer ◽  
...  
Keyword(s):  
Surface Tension ◽  
Hydrogen Bond ◽  
Second Harmonic ◽  
Orientational Order ◽  
Electrolyte Solutions ◽  
Bulk Water ◽  
Atomic Scale ◽  
Dipole Orientation ◽  
Hydrogen Bond Interactions ◽  
Bond Network

Electrolytes interact with water in many ways: changing dipole orientation, inducing charge transfer, and distorting the hydrogen-bond network in the bulk and at interfaces. Numerous experiments and computations have detected short-range perturbations that extend up to three hydration shells around individual ions. We report a multiscale investigation of the bulk and surface of aqueous electrolyte solutions that extends from the atomic scale (using atomistic modeling) to nanoscopic length scales (using bulk and interfacial femtosecond second harmonic measurements) to the macroscopic scale (using surface tension experiments). Electrolytes induce orientational order at concentrations starting at 10 μM that causes nonspecific changes in the surface tension of dilute electrolyte solutions. Aside from ion-dipole interactions, collective hydrogen-bond interactions are crucial and explain the observed difference of a factor of 6 between light water and heavy water.

Temperature dependence of the stability of natural diamond dispersions in electrolyte solutions

Langmuir ◽  
1987 ◽  
Vol 3 (5) ◽  
pp. 654-659 ◽  
Author(s):  
Yu. M. Chernoberezhskii ◽  
V. I. Kuchuk ◽  
O. V. Klochkova ◽  
E. V. Golikova
Keyword(s):  
Temperature Dependence ◽  
Natural Diamond ◽  
Electrolyte Solutions ◽  
The Stability

Temperature dependence of volume changes on mixing electrolyte solutions

1968 ◽  
Vol 13 (2) ◽  
pp. 226-231 ◽  
Author(s):  
Henry E. Wirth ◽  
Antonio. LoSurdo
Keyword(s):  
Temperature Dependence ◽  
Electrolyte Solutions ◽  
Volume Changes
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