Thermoacoustic Parameters Determination of Intermolecular Free-Length of 1-Butyl-2,3-dimethylimidazolium Chloride in Mixed Solvents at T = (298.15 to 313.15) K

Sailaja Muchipali1, Ranjan Kumar Pradhan2, Priyaranjan Mohapatra1,* and Braja B. Nanda2,*

1Department of Chemistry, Veer Surendra Sai University of Technology, Burla-768018, India

2P.G. Department of Chemistry, Vikram Deb Autonomous College, Jeypore-764001, India

*Corresponding authors: Email:;


The intermolecular free-length of 1-butyl-2,3-dimethylimidazolium chloride [bdmim]Cl in pure water as well as in tetra-n-butyl ammonium bromide (TBAB) + water at different concentrations of solute and at T = (298.15 to 313.15) K have been evaluated by making use of ultrasonic and thermoacoustical parameters followed by a comparative study. To accomplish this objective, thermoacoustical parameters for the above said solutions have been calculated. These parameters have been used to determine intermolecular free-length (Lf) for the solutions under study. The values of Lf obtained by thermoacoustical approach were tallied with the values obtained by well-known ultrasonic method (Schaaffs method). To the best of our understanding, this study is an innovative attempt in the determination of inter-molecular free-length present in the investigated solutions by making use of ultrasonic approach.


Intermolecular free-length, Thermoacoustical parameter, 1-Butyl-2,3-dimethyl imidazolium chloride, Schaffs method.

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