Moelwyn-Hughes

Moelwyn-Hughes E A 1957 Physicai Chemistry (New York Pergamon) p 332... 

Moelwyn-Hughes, E.A. The Kinetics of Reactions in Solution , 2nd ed. Oxford University Press London, 1947. 

Moelwyn-Hughes, E. A., Physical Chemistry, p. 1109, Pergamon Press, New York, 1957. 

The velocity distribution for N2 at these two temperatures is shown in Figure 6.8(b). The average velocity is (Moelwyn-Hughes, 1957, p. 38) ... 

Glew, D.N. and Moelwyn-Hughes, E.A. Chemical studies of the methyl halides in water. Disc. Faraday Soc., 15 150-161, 1953. 

Moelwyn-Hughes, E.A. / Physical Chemistry, 2nd Edition, Perga-mon Press, NY, 1961, p. 1207. 

Equations (1) and (4) or other variations of the 12-6 power law are often called the Lennard-Jones potential. The numerical values of the constants in the Lennard-Jones potential may be obtained from studies of the compressibility of condensed phases, the virial coefficients of gases, and by other methods. A summary of these methods and other expressions for the molecular interaction energy can be found in the book by Moelwyn-Hughes (1964). 

In Table 10.1 we saw that all random dipole-dipole interactions follow the inverse sixth-power law except the so-called retarded van der Waals attraction, which varies with the inverse seventh power of the separation. In this section we examine briefly the physical basis of the three different inverse sixth-power laws that describe iritermolecular attractions. Space limitations prevent us from deriving the Debye, Keesom, and London expressions in detail. More complete derivations may be found in many physical chemistry textbooks, such as that by Moelwyn-Hughes (1964). The abbreviated discussion we present should be sufficient, however, to indicate the connection between these attractions and molecular parameters. 

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