Abstract
Ultrasonic absorptions and velocities in mixtures of acetic acid-chloroform and trifluoroacetic acid-chloroform have been measured at 25°C. The excess absorptions are interpreted in terms of the reaction kinetics associated with the breakage and formation of hydrogen bonds using a linear free-energy relation. Unusual ultrasonic relaxation properties have been attributed to the free-energy difference between the open dimer and cyclic dimer of the acid. The NMR chemical shifts have also been measured for the mixtures in order to ascertain the interaction between the acid and chloroform. The results are compared with those obtained from the ultrasonic absorption data.
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Nishikawa, S., Mashima, M. Study of the structural properties of organic mixed solvents by ultrasonic methods. J Solution Chem 6, 501–511 (1977). https://doi.org/10.1007/BF00645416
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DOI: https://doi.org/10.1007/BF00645416