ISSN:
0021-8383
Schlagwort(e):
Chemistry
;
Organic Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
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: \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {{\rm K}_{\rm 8} \left({{\rm Br}_{\rm 2},{\rm Br}^ - } \right) = 8.211 \cdot 10^{ - 5} {\rm gm}{\rm .eq}{\rm .lit}{\rm .}^{ - 1} {\rm min}{\rm .}^{ - 1} } \hfill \\[6pt] {{\rm K}_{\rm 8} \left({{\rm Br}_{\rm 2} } \right)\;\; = 4.182 \cdot 10^{ - 5} {\rm gm}{\rm .eq}{\rm .lit}{\rm .}^{ - 1} {\rm min}{\rm .}^{ - 1} } \hfill \\\end{array} $$\end{document} 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.
Zusätzliches Material:
5 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/prac.19640260306
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