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Phenolphthalein–Pink Tornado Demonstration

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Bruce R. Prall

Department of Chemistry, Marian College, Fond du Lac, WI 54935

Jeannine Eddleton

Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

J. Chem. Educ., 2008, 85 (4), p 527

DOI: 10.1021/ed085p527

Publication Date (Web): April 1, 2008

Abstract

This demonstration uses the vortex generated by a spinning magnetic stir bar to demonstrate Le Châtelier's principle as it applies to the phenolphthalein equilibrium in water and provides an excellent opportunity to discuss limiting and excess reagents.

Keywords (Audience):

First-Year Undergraduate / General

Keywords (Domain):

Demonstrations

Keywords (Feature):

JCE DigiDemos: Tested Demonstrations

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Acids / Bases

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History

Received: August 03, 2009

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Demo

Phenolphthalein–Pink Tornado Demonstration

Abstract

Keywords (Audience):

Keywords (Domain):

Keywords (Feature):

Keywords (Pedagogy):

Keywords (Subject):

Tools

SciFinder Links

History

Recommend & Share

Related Content

A Dramatic Classroom Demonstration of Limiting Reagent Using the Vinegar and Sodium Hydrogen Carbonate Reaction

A Kool Reaction from the Fine Print

Review of The Basics of Crystallography and Diffraction, 3rd Edition

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