Measurement of the Universal Gas Constant R Using a Spherical Acoustic Resonator

We report a new determination of the Universal Gas Constant R: (8.314 471 ±0.000 014) J·mol(−1)K(−1). The uncertainty in the new value is 1.7 ppm (standard error), a factor of 5 smaller than the uncertainty in the best previous value. The gas constant was determined from measurements of the speed of...

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Detalles Bibliográficos
Autores principales: Moldover, M. R., Trusler, J. P. M., Edwards, T. J., Mehl, J. B., Davis, R. S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 1988
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5179197/
http://dx.doi.org/10.6028/jres.093.010
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author Moldover, M. R.
Trusler, J. P. M.
Edwards, T. J.
Mehl, J. B.
Davis, R. S.
author_facet Moldover, M. R.
Trusler, J. P. M.
Edwards, T. J.
Mehl, J. B.
Davis, R. S.
author_sort Moldover, M. R.
collection PubMed
description We report a new determination of the Universal Gas Constant R: (8.314 471 ±0.000 014) J·mol(−1)K(−1). The uncertainty in the new value is 1.7 ppm (standard error), a factor of 5 smaller than the uncertainty in the best previous value. The gas constant was determined from measurements of the speed of sound in argon as a function of pressure at the temperature of the triple point of water. The speed of sound was measured with a spherical resonator whose volume was determined by weighing the mercury required to fill it at the temperature of the triple point. The molar mass of the argon was determined by comparing the speed of sound in it to the speed of sound in a standard sample of argon of accurately known chemical and isotoptic composition.
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spelling pubmed-51791972021-08-02 Measurement of the Universal Gas Constant R Using a Spherical Acoustic Resonator Moldover, M. R. Trusler, J. P. M. Edwards, T. J. Mehl, J. B. Davis, R. S. J Res Natl Bur Stand (1977) Article We report a new determination of the Universal Gas Constant R: (8.314 471 ±0.000 014) J·mol(−1)K(−1). The uncertainty in the new value is 1.7 ppm (standard error), a factor of 5 smaller than the uncertainty in the best previous value. The gas constant was determined from measurements of the speed of sound in argon as a function of pressure at the temperature of the triple point of water. The speed of sound was measured with a spherical resonator whose volume was determined by weighing the mercury required to fill it at the temperature of the triple point. The molar mass of the argon was determined by comparing the speed of sound in it to the speed of sound in a standard sample of argon of accurately known chemical and isotoptic composition. [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 1988 1988-04-01 /pmc/articles/PMC5179197/ http://dx.doi.org/10.6028/jres.093.010 Text en https://creativecommons.org/publicdomain/zero/1.0/ The Journal of Research of the National Bureau of Standards is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.
spellingShingle Article
Moldover, M. R.
Trusler, J. P. M.
Edwards, T. J.
Mehl, J. B.
Davis, R. S.
Measurement of the Universal Gas Constant R Using a Spherical Acoustic Resonator
title Measurement of the Universal Gas Constant R Using a Spherical Acoustic Resonator
title_full Measurement of the Universal Gas Constant R Using a Spherical Acoustic Resonator
title_fullStr Measurement of the Universal Gas Constant R Using a Spherical Acoustic Resonator
title_full_unstemmed Measurement of the Universal Gas Constant R Using a Spherical Acoustic Resonator
title_short Measurement of the Universal Gas Constant R Using a Spherical Acoustic Resonator
title_sort measurement of the universal gas constant r using a spherical acoustic resonator
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5179197/
http://dx.doi.org/10.6028/jres.093.010
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