Resumo

BALUJA, Shipra  e  ALNAYAB, Elham Abdullah Mo. Volumetric behaviour of tetra-n-butyl ammonium bromidein various solvents at different temperatures. Rev. colomb. cienc. quim. farm. [online]. 2019, vol.48, n.3, pp.722-761.  Epub 04-Nov-2020. ISSN 0034-7418.  https://doi.org/10.15446/rcciquifa.v48n3.84990.

Measurement of ultrasonic velocity, density and viscosity of solutions of Tetra Butyl Ammonium Bromide have been carried outin different solvents (water, methanol, ethanol, 1-propanol and 1-butanol) as functions of concentration (1 to 0.1 M) at different temperatures (298.15 K to 318.15K). Using these experimental data, various acoustical and apparent parameters such as acoustical impedance, intermolecular free length, adiabatic compressibility, molar compressibility, Van der Waals constant, relaxation strength, apparent molar isentropic compressibility, apparent molar volume have been evaluated. Further, some thermodynamic parameters such as Gibbs free energy of activation, enthalpy and entropy of activation have been evaluated. All these parameters have been evaluated to understand type of interactions present in studied solutions.

Palavras-chave : Tetra Butyl Ammonium Bromide; water; methanol; ethanol; 1-propanol; 1-butanol; acoustical and apparent parameters; Molecular interactions.

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