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  Home > JCE Print > Journal of Chemical Education > Issues > 2001  > September  >
In the Laboratory
Chemical Principles Revisited
Determination of the Universal Gas Constant, R. A Discovery Laboratory
David B. Moss
Moses Brown School, Providence, RI 02906

Kathleen Cornely
Department of Chemistry, Providence College, Providence, RI 02918-0001
Cover
September 2001
Vol. 78 No. 9
p. 1260
Abstract
This experiment combines published procedures for the generation of three gases (hydrogen, nitrogen, and oxygen) and adapts them so that they can be used with a single gas-generation and collection apparatus. Working in collaborative groups, students determine density and number density for each gas. By comparing values for these two quantities in a post-lab discussion, students "discover" Avogadro's assertion that equal volumes contain equal numbers of particles and demonstrate that R has a single value for all three gases under consideration and so is truly a universal constant.
More Information
*  Citation
 Moss, David B.; Cornely, Kathleen. J. Chem. Educ. 2001 78 1260.
*  Keywords
 Collaborative / Cooperative Learning; Laboratory Instruction; Gases; General Chemistry; Inquiry-Based / Discovery Method; Introductory / High School Chemistry
*  History
 Created:
Last Updated:		 August 14, 2001
April 14, 2005
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