Many
chemical and physical equilibrium conditions can be determined
from minimizing the Gibbs free energies of the system. Efficient analytical
representations of the entropy and Gibbs free energy of carbonyl sulfide
remain elusive in the communality of science and engineering. Here,
we report two analytical representations of the entropy and Gibbs
free energy for carbonyl sulfide, and the prediction procedures only
involve six molecular constants of the carbonyl sulfide molecule.
In the temperature range from 300 to 6000 K, the average relative
deviations of the predicted molar entropy and reduced Gibbs free energy
values of carbonyl sulfide from the National Institute of Standards
and Technology database are arrived at 0.150 and 0.189%, respectively.
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