The relative rates of the reactions of hydrogen iodide and deuterium iodide with methyl iodide were studied by a competitive method at 310° and 250°C. The analysis of hydrogen‐deuterium mixtures was accomplished by means of a simple viscometer with an accuracy of 0.5 percent. It was found that hydrogen iodide reacts about 1.4 times as fast as deuterium iodide at both temperatures. These results are discussed in terms of Eyring's theory of absolute reaction rates and a simple model.
REFERENCES
1.
2.
R. A.
Ogg
, Jr., J. Am. Chem. Soc.
56
, 526
(1934
). It should be mentioned that a decimal error occurs in this article; the values of K and are too large by a factor of ten.3.
4.
5.
6.
Dr. Jacob Bigeleisen has pointed out that the impurity, methylal, which is found in Eastman Kodak methyl iodide, probably would not be completely removed by the purification procedure used, but also that a trace of this substance would not affect the kinetic results.
7.
Glasstone, Laidler, and Eyring, Theory of Rate Processes, (McGraw‐Hill Book Company, Inc., New York, 1941), p. 190.
8.
Reference 7, p. 91.
9.
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© 1950 American Institute of Physics.
1950
American Institute of Physics
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