An investigation of certain physical properties of binary mixtures of some organic liquids

Abstract

In this thesis is described an account of the examination of certain physical properties of binary mixtures of aliphatic monohydroxy alcohols, one in particular of these alcohols being a constant constituent of each mixture. The objects of the investigation were as follows I. To ascertain by the investigation of changes occasioned in the physical properties density, refractivity, viscosity, heat of mixing, magnetic susceptibility, what changes, physical or chemical, occur when the compounds are mixed. The changes sought included compound formation, (inter molecular coordinated), de association, association. II. To ascertain whether magnetic measurements are likely to prove more suitable than others for indicating the changes which occur. III. To examine the results with the view of obtaining an insight into the electronic and magnetic relationships of the molecules. The liquids used were mixtures of n-butyl alcohol with iso propyl, normal propyl, iso butyl and methyl butyl alcohols respectively, and the density, refractivity, viscosity, and magnetic susceptibility of a complete series of mixtures were examined in each case. Heat of mixing measurements were made only in the case of n-butyl alcohol with iso-propyl alcohol. The heat change as shown by preliminary experiments proved to be too small and to vary so little in the various mixtures as to be useless for the present purpose, particularly as the accuracy of the method employed was in many cases not so great as the divergences observed.