We use cookies to help provide and enhance our service and tailor content and ads. J. fhys. However, taking only acoustic phonons into account is a better approximation for NaI than for NaCl, due to the larger ionic mass ratio for NaI. … Chum, Solids Vol. Copyright © 2020 Elsevier B.V. or its licensors or contributors. 355-362, 1986 Printed in Great Britain. With molar masses of 22.99 and 35.45 g/mol respectively, 100 g of NaCl contains 39.34 g Na and 60.66 g Cl. Substance (form) Enthalpy Δ f H (kJ): Gibbs Δ f G (kJ): Entropy (J/ K: Specific heat C P (J/K): … Sodium chloride / ˌ s oʊ d i ə m ˈ k l ɔːr aɪ d /, commonly known as salt (although sea salt also contains other chemical salts), is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ions. The specific heat capacities, obtained at room temperature, were approximately independent of pressure. We measured the thermal conductivity and heat capacity per unit volume for solid NaCl and NaI using the transient hot-wire technique. 4, pp. This page provides supplementary chemical data on sodium chloride. kg-1 were measured from 285 K to a lower temperature of 202 K < T < 236 K, at 0.1 MPa, dependent on composition. Copyright © 1986 Published by Elsevier Ltd. Journal of Physics and Chemistry of Solids, https://doi.org/10.1016/0022-3697(86)90025-9. Analysis of the thermal conductivity data showed that the Leibfried-Schlömann formula is a better description for NaCl than for NaI. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. By continuing you agree to the use of cookies. A cooling scan method permitted supercooling of water and aqueous solutions well below their normal freezing points. 47, No. THERMAL CONDUCTIVITY AND HEAT CAPACITY OF SOLID NaCl AND Nal UNDER PRESSURE B, HAKANSSON and P. ANDERSSON Department of Physics, University of Umea, S-901 87 UMEA, Sweden (Received 13 May 1985; accepted 3 October 1985) Abstracte … Thermal conductivity and heat capacity of solid NaCl and NaI under pressure. 0022-3697/86 $3.00 + .00 Pergamon Press Ltd. These measurements were performed with a differential scanning calorimeter (DSC). Measurements were performed in the temperature range 100–400 K and at pressures up to 2 GPa. For both NaCl and NaI the effect of optic phonons on thermal conductivity cannot be ignored.

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