Abstract
IN a recent letter to NATURE (122, 313; Sept. 1, 1928) E. Gaviola has presented some evidence indicating that the heat of dissociation (D) of N2 is not more than 9.8 volts, as contrasted with the 11.4 volt value calculated by Birge and Sponer (Phys. Rev., 28, 259; 1926). It seems desirable to state that some months ago R. S. Mulliken and I independently reached the conclusion that the value of D for N2 is probably about 9.5 volts. The evidence on which I reached this conclusion, which seems to me quite direct and unambiguous, is contained implicitly in a recent article by G. Herzberg (Ann. d. Physik, 86, 189; 1928) on the negative N2 bands.
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BIRGE, R. The Heat of Dissociation of Nitrogen. Nature 122, 842 (1928). https://doi.org/10.1038/122842a0
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DOI: https://doi.org/10.1038/122842a0
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