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Colorful Kinetics
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Abstract
We present the details of an overhead projector demonstration to show the concentration dependence of reaction rates. Common household bleach is used to react with green food coloring. The green food coloring is a mixture of blue and yellow food colorings. The bleach reacts rapidly with the yellow food coloring, turning the solution from green to blue in a matter of seconds. The bleach concentration can be varied to demonstrate concentration effects, or it can be added dropwise to the edge of a petri dish to demonstrate diffusion effects.
Keywords (Audience):
High School / Introductory ChemistryKeywords (Domain):
DemonstrationsKeywords (Feature):
Overhead Projector DemonstrationsKeywords (Subject):
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This article has been cited by 1 ACS Journal articles (1 most recent appear below).
Applications of Reaction Rate
Kevin CunninghamJournal of Chemical Education2007 84 (3), 430Applications of Reaction Rate
Kevin CunninghamJournal of Chemical Education2007 84 (3), 430This article presents an assignment in which students are to research and report on a chemical reaction whose increased or decreased rate is of practical importance. Specifically, students are asked to represent the reaction they have chosen with an ...
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- Received: August 03, 2009
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