DENSITY AND VISCOSITY OF 1-BROMOALKANES

Density and Viscosity have been measured for ten l-bromoalkanes (1-bro moethane to 1-bromoundecane) at temperatures ranging from 292.35 K to 323.15 K. The molar volumes have been found to follow the additive rul e, V-m = V-CH3 + xV(CH2) + V-Br, for all 1-bromoalkanes. The thermal e xpansivities have been calculated from the density data. The variation of viscosity of bromoalkanes has been shown as a Function of chain le ngth and temperature. Thermodynamic activation parameters for viscous how, Delta H-not equal,Delta G(not equal) and Delta S-not equal have b een calculated. AS' is found to be negative for all the bromoalkanes a nd the maximum corresponds distinctively at 1-bromopentane.