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  Home > JCE Print > Journal of Chemical Education > Issues > 2000  > August  >
In the Laboratory
Evaporation Kinetics in Short-Chain Alcohols by Optical Interference
Ian M. Rosbrugh, S. Y. Nishimura, and A. M. Nishimura
Department of Chemistry, Westmont College, Santa Barbara, CA 93108-1099
Cover
August 2000
Vol. 77 No. 8
p. 1047
Abstract
The evaporation rates of volatile organic liquids may be determined through the observation of optical interference of spatially coincident light that is reflected from the top (air-liquid) and bottom (liquid-surface) of a liquid drop on a glass surface. As an example of what is possible with this technique, the evaporation for a series of short-chain alcohols and acetone was investigated. For 1-propanol, 2-propanol, 2-methyl-1-propanol, and acetone, the kinetics of evaporation was determined to be zero order. For methanol and ethanol, the process was significantly higher than zero order.
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Experimental procedure, optical interference information, report forms, and lab needs are included.
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*  Citation
 Rosbrugh, Ian M.; Nishimura, S. Y.; Nishimura, Allan M. J. Chem. Educ. 2000 77 1047.
*  Keywords
 Kinetics; Laboratory Equipment / Apparatus; Laboratory Instruction; Liquids; Physical Chemistry
*  History
 Created:
Last Updated:		 July 5, 2000
August 31, 2005
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