Tola1 polarizations at various temperatures have been measured for aiimoiiia, boron trichloridc, chlorodifluoromethane, chlorotrifluoromethane, dichlorodifluoroinethane, 1 ,1-difluoroethylene, diniethyl ether, ethyl chloride, fluoroforni, methyl bromide, methyl chloride and triinethylamine, and the results compared with earlier measurements.
The sec;ond dielectric virial coefficients for five polar gases CHF3, CHF2CI, CH,CI, CH, : CFZ and (CH&O were meawred at 30,50 and 70°C. For the gases CFJCl and CF2Cl2, 8 was measured at 50°C only. The experimental results were compared with those predicted by the forms of intermolecular potential that have been suggested for polar gases. None of these proves to be entirely satisfactory.
291 5Sons, 1954).
The interaction second dielectric virial coefficient a12 has been measured for a number of polar gas mixtures. For the mixtures (CH3)20+CHF3 and (CH,),O+CHF,Cl, large positive values of BIZ are found, probably as a result of hydrogen bonding. None of the intermolecular potential functions proposed will give even a qualitative prediction of the experimental results.In a previous paper (referred t o as part 2) values of 98, the second dielectric virial coefficient, were reported for several polar gases. With suitably chosen
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.