A diffusive anomaly of water in aqueous sodium chloride solutions at low temperatures

The Journal of Physical Chemistry. B
Jun Soo Kim, Arun Yethiraj

Abstract

Molecular dynamics simulations are presented for the self-diffusion coefficient of water in aqueous sodium chloride solutions. At temperatures above the freezing point of pure water, the self-diffusion coefficient is a monotonically decreasing function of salt concentration. Below the freezing point of pure water, however, the self-diffusion coefficient is a non-monotonic function of salt concentration, showing a maximum at approximately one molal salt. This suggests that sodium chloride, which is considered a structure-making salt at room temperature, becomes a structure-breaking salt at low temperatures. A qualitative understanding of this effect can be obtained by considering the effect of ions on the residence time of water molecules near other water molecules. A consideration of the freezing point depression of aqueous sodium chloride solutions suggests that the self-diffusion coefficient of water in supercooled sodium chloride solutions is always higher than that in pure (supercooled) water at the same temperature.

Citations

Dec 3, 2008·The Journal of Chemical Physics·Jun Soo Kim, Arun Yethiraj
Jun 28, 2011·The Journal of Chemical Physics·Byoungseon JeonShriram Ramanathan
Jul 5, 2011·The Journal of Chemical Physics·M Paula LonginottiHoracio R Corti
Feb 12, 2014·The Journal of Chemical Physics·Ruiting Zhang, Wei Zhuang
Oct 17, 2009·The Journal of Chemical Physics·Y-S LinJ L Skinner
Aug 12, 2014·The Journal of Chemical Physics·Anna KuffelJan Zielkiewicz
Feb 14, 2014·Proceedings of the National Academy of Sciences of the United States of America·Yun DingMichele Parrinello
Jun 20, 2018·Nanoscale·Clodomiro Cafolla, Kislon Voïtchovsky
Sep 28, 2018·Physical Chemistry Chemical Physics : PCCP·Joanna GrabowskaJan Zielkiewicz
Mar 15, 2011·Journal of Physics. Condensed Matter : an Institute of Physics Journal·D CorradiniM Rovere
Sep 14, 2011·Physical Chemistry Chemical Physics : PCCP·Peter A AlpertDaniel A Knopf
Jan 5, 2017·The Journal of Chemical Physics·Andreas PeckhausThomas Leisner
Feb 5, 2021·The Journal of Physical Chemistry. B·Joanna GrabowskaJan Zielkiewicz
Apr 7, 2012·The Journal of Physical Chemistry. B·N Galamba
Jan 28, 2011·The Journal of Physical Chemistry. B·D CorradiniP Gallo
Sep 13, 2012·The Journal of Physical Chemistry. B·Jun Soo KimArun Yethiraj
Sep 13, 2012·The Journal of Physical Chemistry. B·Jagannath MondalArun Yethiraj
Apr 15, 2014·The Journal of Physical Chemistry. a·Piotr Garbacz, William S Price
Jan 1, 2021·The Journal of Physical Chemistry. B·Ashley K BorkowskiWard H Thompson

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

© 2021 Meta ULC. All rights reserved