POLARIZABILITY AND MOLECULAR RADIUS OF BROMOFORM AND HYDROCARBON LIQUIDS

Densities and refractive indices of bromoform, n-heptane, n-octane, 2,2,4-trimethylpentane, n-nonane, n-decane, n-tetradecane, n-hexadecane and 1,2,3,4-tetrahydronaphthalene have been measured over the temperature interval of 298.15-323.15 K. Polarizabilities and molecular radii were calculated on the basis of Bottcher's theory of electric polarization and compared with the molecular radii evaluated from the molar volumes of the liquids and from free volume considerations. Bottcher's theory is found to be satisfactory in estimating the molecular radii and polarizability of long-chain molecules. Lorenz-Lorentz and Eykman relations have been used to calculate the thermal expansion coefficients and the polarizabilities of liquids.