Equilibrium Thermodynamics of the Dimers and Trimers of H₂ and D₂ and Their Heterodimer (H₂)(D₂).

ABSTRACT: The equilibrium thermochemical properties of the dimers and trimers of H₂ and D₂ are obtained from the equations of state (EOSs) of normal H₂ and D₂. The standard dimer and trimer equilibrium constants K _D ^o and K _T ^o and ΔH _D, T ^o and ΔS _D, T ^o are reported for these weakly bound van der Waals molecules between 25 and 45 K. Statistical thermodynamics (ST) calculations of H₂ and D₂ dimerization using Morse pair potentials to account for intermolecular interactions, obtained from recent experimental work, are in qualitative agreement with the EOS results. The entropies of the H₂ and D₂ dime

SUBMITTER: Halpern AM 

PROVIDER: S-EPMC9955217 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature