Abstract
Excess volumes (VE) 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.