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An Introduction to Thermal Physics
Found in: Page 220
An Introduction to Thermal Physics

An Introduction to Thermal Physics

Book edition 1st
Author(s) Daniel V. Schroeder
Pages 356 pages
ISBN 9780201380279

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Short Answer

The analysis of this section applies also to linear polyatomic molecule for which no rotation about the axis of symmetry is possible .An example is CO2, with e=0.000049 eV. Estimate the rotational partition function for a CO2 molecule at room temperature.(Note that the arrangement of the atom is OCO, and the two oxygen atoms are identical.)

Zrot =kT/2



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Step by Step Solution

substitute 8.617*10-3 eV for k,300K for T and 0.000049eV for ∈

Here, k is Boltzmann's constant, T is the room temperature, and is a constant which sets energy scale for rotational excitations.

Zmol =kT/2∈




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