Molecular Models of Indicators

William F. Coleman
Department of Chemistry, Wellesley College, Wellesley, MA 02481
J. Chem. Educ., 2008, 85 (8), p 1152
DOI: 10.1021/ed085p1152
Publication Date (Web): August 1, 2008

Abstract

The Featured Molecules this month are the acid and base forms of three common indicators—phenolphthalein, methyl orange, and methyl red. These three substances display interesting structural features as the pH-induced transformation from one form to another takes place in three different ways.

Keywords (Audience):

High School / Introductory Chemistry

Keywords (Feature):

JCE Featured Molecules

Keywords (Pedagogy):

Internet / Web-Based Learning

Keywords (Subject):

Acids / Bases
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History

  • Received: August 03, 2009

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