Syeda K. Begum, S. Akhtar, M. Habibullah
Nov 1, 1995
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0
Influential Citations
3
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Journal
Physics and Chemistry of Liquids
Abstract
Abstract Density and Viscosity have been measured for ten 1-bromoalkanes (1-bromoethane to 1-bromoundecane) at temperatures ranging from 292.35 K to 323.15 K. The molar volumes have been found to follow the additive rule, Vm =V CH3 + xV CH 2 + V Br' for all 1-bromoalkanes. The thermal expansivities have been calculated from the density data. The variation of viscosity of bromoalkanes has been shown as a function of chain length and temperature. Thermodynamic activation parameters for viscous flow, ΔH≠, ΔG≠ and ΔS≠ have been calculated. ΔS≠ is found to be negative for all the bromoalkanes and the maximum corresponds distinctively at 1-bromopentane.