Ultrasonic Absorption Associated with Tertiary Butanol Complex Formation in Dilute Solutions in Cyclohexane

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Abstract
Ultrasonic absorption measurements have been used as a basis for studying the kinetics of the reaction between tertiary butanol monomers and tetramers, occurring in dilute solutions with cyclohexane. Measurements made at 6, 15, and 27°C over a frequency range of 5 to 53 Mc/sec reveal several concentration dependent relaxation effects. An analysis using thermodynamically determined degree of dissociation leads to the determination of the equilibrium constant, rate constants and the heat of reaction. The excess absorption up to 0.02 mole fraction butanol concentration is reasonably well accounted for by the perturbation of the tetramer‐monomer equilibrium.