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  Home > JCE Print > Journal of Chemical Education > Issues > 1999  > December  >
In the Classroom
Tested Demonstrations
Environmental Chemistry Using Ultrasound
submitted by: Belinda K. Wilmer, Edward Poziomek, and Grazyna E. Orzechowska
Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA 23529

checked by: Melvyn M. Mosher
Department of Chemistry, Missouri Southern State College, Joplin, MO 64801-1595

Cover
December 1999
Vol. 76 No. 12
p. 1657
Abstract
With the growing interest of sonication in industry, medicine, and research, the need to introduce students to the theory and applications of sonication also grows. In this demonstration, we describe a simple method for presenting the usefulness of sonication in environmental chemistry. When an aqueous solution of carbon tetrachloride is sonicated, it degrades to produce HCl and HOCl. These products cause a reduction of pH, which can be observed visually with a pH indicator.
More Information
*  Citation
 Wilmer, Belinda K.; Poziomek, Edward; Orzechowska, Grazyna E. J. Chem. Educ. 1999 76 1657.
*  Keywords
 Demonstrations; Environmental Chemistry; AcidÐBase Chemistry; Aqueous Solution Chemistry; Teaching / Learning Aids
*  History
 Created:
Last Updated:		 November 10, 1999
June 23, 2005
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