Diamagnetism of organic liquid mixtures at different temperatures

The diamagnetic susceptibilities of mixtures of benzene-acetone, chloroformacetone and nitrobenzene-acetone have been studied at different temperatures ranging from 15°;C to 50°;C, using the Quincke method with very large magnetic fields. The factors influencing the measurements made by such a method are critically considered and natural explanations are offered to the anomalous results obtained by different investigators. The susceptibilities of these mixtures obey the additive law in this range of temperature. Further the pure liquids do not show any variation in their susceptibility values between 15°;C and 50°;C. A large amount of evidence is presented to show that association in organic liquids does not produce any change in the specific susceptibility and that the additive law of mixtures is true unless chemical combination in the mixture changes entirely the nature of the bonds linked to the carbon atom.