Undergraduate Laboratory Experiments in Sonochemistry using an Ultrasonic Bath

Shaw, Lawton

dc.contributor.author	Shaw, Lawton
dc.date.accessioned	2010-04-14T17:15:20Z
dc.date.available	2010-04-14T17:15:20Z
dc.date.issued	2010-04-14T17:15:20Z
dc.identifier.uri	http://hdl.handle.net/2149/2450
dc.description	This presentation was given at a “General Papers” session at the ACS conference. This talk triggered a lot of questions about specific details of the experiment, which indicated that there was a lot of interest in this. My further impression from questions was that sonochemistry is not very well known to chemical educators and that there is sufficient interest to continue working on new undergraduate laboratory experiments in this area.	en
dc.description.abstract	Two undergraduate experiments in sonochemistry are presented. The first experiment involves the sonication of aqueous solutions of potassium iodide. Sonication of aqueous media generates hydroxyl radicals, which oxidizes iodide to triodide. Triiodide is measured spectrophotometrically. Sonication is performed with an ultrasonic cleaning bath. Solutions are sonicated in 13 x 100 mm test tubes that, coincidentally, make suitable cuvettes for the Spectronic-20 teaching-laboratory spectrophotometers used in the experiment. An optional version of the experiment is to compare rates of triiodide production under air vs. nitrogen. The second experiment involves the oxidation and bleaching of water-soluble dyes in aqueous solutions. The chemical kinetics exhibited in each experiment are discussed.	en
dc.language.iso	en	en
dc.relation.ispartofseries	92.927.G1176;
dc.subject	Sonochemistry	en
dc.subject	Hydroxyl Radicals	en
dc.subject	Spectrophotometrically	en
dc.subject	Chemical Kinetics	en
dc.title	Undergraduate Laboratory Experiments in Sonochemistry using an Ultrasonic Bath	en
dc.type	Presentation	en

Undergraduate Laboratory Experiments in Sonochemistry using an Ultrasonic Bath

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