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  Home > JCE Print > Journal of Chemical Education > Issues > 1998  > June  >
In the Classroom
Process Development in the Teaching Laboratory
Leonard C. Klein and Susanne M. Dana
Roanoke Valley GovernorŐs School of Science and Technology, 2104 Grandin Rd., Roanoke, VA 24015
Cover
June 1998
Vol. 75 No. 6
p. 745
Abstract
Many experiences in high school and undergraduate laboratories are well-tested cookbook recipes that have already been designed to yield optimal results; the well-known synthesis of aspirin is such an example. In this project for advanced placement or second-year high school chemistry students, students mimic the process development in industrial laboratories by investigating the effect of varying conditions in the synthesis of aspirin. The class decides on criteria that should be explored (quantity of catalyst, temperature of reaction, etc.). The class is then divided into several teams with each team assigned a variable to study. Each team must submit a proposal describing how they will explore the variable before they start their study. After data on yield and purity has been gathered and evaluated, students discuss which method is most desirable, based on their agreed-upon criteria. This exercise provides an opportunity for students to review many topics from the course (rate of reaction, limiting reagents, Beer's Law) while participating in a cooperative exercise designed to imitate industrial process development.
More Information
*  Citation
 Klein , Leonard C.; Dana, Susanne M. J. Chem. Educ. 1998 75 745.
*  Keywords
 Organic Chemistry, Teaching/Learning Theory/Practice, Laboratory
*  History
 Created:
Last Updated:		 June 23, 1999
June 24, 2005
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