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A Reaction That Takes Place in Beakers but Not in Conical Flasks: A Catalysis-Related Demonstration

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Colin White

Department of Chemistry, The University of Sheffield, Sheffield S3 7HF, United Kingdom

Charles Ophardt

Department of Chemistry, Elmhurst College, Elmhurst, IL 60126

J. Chem. Educ., 2004, 81 (3), p 364

DOI: 10.1021/ed081p364

Publication Date (Web): March 1, 2004

Section:

History, Education, and Documentation

Abstract

A striking demonstration emphasizing that substances which promote reactions are not catalysts if they are consumed in the process. The demonstration is based on the iron(II) induced oxidation of iodide by chromium(VI).

Find this demonstration and others in the DigiDemos area of the JCE Digital Library.

Keywords (Audience):

High School / Introductory Chemistry

Keywords (Domain):

Demonstrations

Keywords (Feature):

JCE DigiDemos: Tested Demonstrations

Keywords (Pedagogy):

Misconceptions / Discrepant Events

Keywords (Subject):

Catalysis

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Citing Articles

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This article has been cited by 3 ACS Journal articles (3 most recent appear below).

Applications of Reaction Rate
Kevin Cunningham
Journal of Chemical Education2007 84 (3), 430
- Applications of Reaction Rate
  Kevin Cunningham
  Journal of Chemical Education2007 84 (3), 430
  This 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 ...
  Abstract | Hi-Res PDF | PDF w/ Links
Concerning "A Reaction That Takes Place in Beakers but Not in Conical Flasks: A Catalysis-Related Demonstration" (the author replies)
Colin White
Journal of Chemical Education2005 82 (4), 527
- Concerning "A Reaction That Takes Place in Beakers but Not in Conical Flasks: A Catalysis-Related Demonstration" (the author replies)
  Colin White
  Journal of Chemical Education2005 82 (4), 527
  A good teacher uses a variety of teaching styles and aids to stimulate and educate students, including, if appropriate, “trickery” or showmanship.
  Abstract | Hi-Res PDF | PDF w/ Links
Concerning "A Reaction That Takes Place in Beakers but Not in Conical Flasks: A Catalysis-Related Demonstration"
James Espenson
Journal of Chemical Education2005 82 (4), 527
- Concerning "A Reaction That Takes Place in Beakers but Not in Conical Flasks: A Catalysis-Related Demonstration"
  James Espenson
  Journal of Chemical Education2005 82 (4), 527
  The author finds it distressing to encounter a lecture demonstration that seeks to make a valid scientific point through deception.
  Abstract | Hi-Res PDF | PDF w/ Links