Sackur-Tetrode constant

{
  "id": "MLC-T-CHM-010470",
  "term": "Sackur-Tetrode constant",
  "field": "Chemistry",
  "definition": "A dimensionless constant equal to the molar entropy of an ideal monatomic gas of atoms with relative atomic mass 1, at a temperature of 1 K and a pressure of 100 kPa, divided by the molar gas constant. It follows from the Sackur-Tetrode equation and is calculated from the Boltzmann constant, the Planck constant and the atomic mass constant. Its CODATA 2018 value is about negative 1.1517 at 100 kPa.",
  "see_also": [
    "entropy",
    "gas constant",
    "standard pressure"
  ],
  "references": [
    "CODATA Bull. 1986, 63, 1 (https://doi.org/10.6028/jres.092.010)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/sackur-tetrode-constant/"
}