Heat capacities of O2, N2, CO, and NO at low temperatures
- 1 January 1969
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Physics
- Vol. 47 (1) , 23-29
- https://doi.org/10.1139/p69-004
Abstract
The heat capacities of O2, N2, CO, and NO have been measured in the temperature range from 4.2 °K to about 0.8 °K. No anomalous behavior was found. The results were fitted to the Debye expression (assuming 3 degrees of freedom per molecule) to yield the following values for Θ0: O2, 104.5 ± 1.0 °K; N2, 83.5 ± 1.0 °K; CO, 103.0 ± 1.0 °K; NO, 122 ± 2 °K. The results are discussed in terms of the residual entropies of CO and NO.Keywords
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