Kinetics and Mechanism of Sonochemical decomposition of aqueous bromoform solution

Abstract

Ultrasonic waves obtained from Mullard's high frequency ultrasonic generator type E-7562 with a barium titanate transducer having a frequency of I Mc./sec. were employed to study the sonochemical decomposition of aqueous bromoform solution. At constant R. F. output (about 1.7 Kv) to the crystal, the reaction was found to obey the Zero-order kinetics with average velocity constants in standard unit as follows: K₈ (Br₂,Br⁻)=8.211·10⁻⁵gm.eq.lit.⁻¹min.⁻¹ K₈ (Br₂)=4.182·10⁻⁵gm.eq.lit.⁻¹min.⁻¹. Effects of bulk and ultrasonic intensity have also been demonstrated. The rate of reaction at different dilutions of aqueous bromoform solution and also at different intensities has been investigated conductometrically. A probable mechanism of the reaction was also presented.