Volumetric Behaviour of an Alcohol with 1,2-Dibromoethane

Abstract

Excess volumes (V^E) for the binary liquid mixtures of 1,2-dibromoethane with n-propanol, n-butanol, n-pentanol, n-hexanol, n-heptanol, n-octanol and n-decanol have been measured as a function of composition at 303.15 K by a dilatometric method. V ^E is positive over the entire range of composition in all the seven systems. The positive excess volumes increase with increase in chain length from (C₃ to C₁₀). The results are explained in terms of the break up of hydrogen bonds, interstitial accommodation of 1.2-dibromoethane molecules in self associated alcohol and the possible hydrogen bond interaction of the type Br H-O between unlike molecules.