Effect of dissolved salt on the anomalies of water at negative pressure
arXiv:2001.10754 · doi:10.1063/5.0002745
Abstract
Adding salt to water at ambient pressure affects its thermodynamic properties. At low salt concentration, anomalies such as the density maximum are shifted to lower temperature, while at large enough salt concentration they cannot be observed any more. Here we investigate the effect of salt on an anomaly recently observed in pure water at negative pressure: the existence of a sound velocity minimum along isochores. We compare experiments and simulations for an aqueous solution of sodium chloride with molality around , reaching pressures beyond . We also discuss the origin of the minima in the sound velocity and emphasize the importance of the relative position of the temperatures of sound velocity and density anomalies.
arXiv comment10 pages, 13 figures, 1 appendix. Added minor simulation details
References in corpus (11)
- Relation Between the Widom line and the Strong-Fragile Dynamic Crossover in Systems with a Liquid-Liquid Phase Transition
- Anomalies in water as obtained from computer simulations of the TIP4P/2005 model: density maxima, and density, isothermal compressibility and heat capacity minima
- Molecular mechanism for cavitation in water under tension
- Two-structure thermodynamics for the TIP4P/2005 model of water covering supercooled and deeply stretched regions
- Anomalies in bulk supercooled water at negative pressure
- A route to explain water anomalies from results on an aqueous solution of salt
- Equation of state for supercooled water at pressures up to 400 MPa
- Compressibility anomalies in stretched water and their interplay with density anomalies
- Shrinking of Rapidly Evaporating Water Microdroplets Reveals their Extreme Supercooling
- A comprehensive scenario of the thermodynamic anomalies of water using the TIP4P/2005 model
- Thermodynamics of Fluid Polyamorphism