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J. Chem. Phys. 15, 261 (1947); http://dx.doi.org/10.1063/1.1746492 (7 pages)
Calculation of Equilibrium Constants for Isotopic Exchange Reactions
(Received 5 February 1947)
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Add to FacebookIt is pointed out that the possibility of chemical separation of isotopes is a quantum effect. This permits a direct calculation of the difference in the free energies of two isotopic molecules. Tables and approximation methods are given which permit a rapid calculation of equilibrium constants if the frequency shifts on isotopic substitution are known. Several applications are discussed.
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H. C. Urey and D. Rittenberg, J. Chem. Phys. 1, 137 (1933)JCPSA6000001000002000137000001.H. C. Urey and D. Rittenberg, J. Chem. Phys. 1, 137 (1933)JCPSA6000001000002000137000001., J. C. L. Blagg and G. M. Murphy, J. Chem. Phys. 4, 631 (1936)JCPSA6000004000010000631000001.
H. G. Thode and H. C. Urey, J. Chem. Phys. 7, 34 (1939)JCPSA6000007000001000034000001., C. A. Hutchison, D. W. Stewart, and H. C. Urey, J. Chem. Phys. 8, 532 (1940)JCPSA6000008000007000532000001.
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