Accurate and general model to predict molar entropy for diatomic molecules

Ridha Horchani*, Haikel Jelassi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


We present an accurate and a general model to predict the molar entropy of gaseous diatomic molecule substances. The proposed model is derived from the use of the partition function and shows an excellent agreements with experimental data in a wide range of temperature for CsO, CsF and CsCl molecules. The average relative deviation of the obtained values from experimental data is less than 0.3%.

Original languageEnglish
Pages (from-to)103-106
Number of pages4
JournalSouth African Journal of Chemical Engineering
Publication statusPublished - Jul 2020


  • Diatomic gaseous molecules
  • Molar entropy
  • Partition function

ASJC Scopus subject areas

  • Catalysis
  • Education
  • Energy (miscellaneous)
  • Process Chemistry and Technology
  • Fluid Flow and Transfer Processes
  • Filtration and Separation

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