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  Home > JCE Print > Journal of Chemical Education > Issues > 2000  > September  >
In the Laboratory
The Distribution Constant of Iodine between Aqueous and Organic Phases
Sean A. C. McDowell
Department of Biological and Chemical Sciences, University of the West Indies, Cave Hill Campus, Bridgetown, Barbados
Cover
September 2000
Vol. 77 No. 9
p. 1213
Abstract
The distribution equilibrium constant of iodine between water and the water-insoluble organic solvent octamethylcyclotetrasiloxane was determined by a titrimetric method. Octamethylcyclotetrasiloxane is an alternative to the more commonly used carbon tetrachloride, which is suspected of causing cancer. The stability equilibrium constants for the iodine-chloride (I2Cl-) and iodine bromide (I2Br-) complex trihalide ions was also estimated from a linear least-squares graphical plot.
More Information
*  Citation
 McDowell, Sean A. C. J. Chem. Educ. 2000 77 1213.
*  Keywords
 Physical Chemistry; Laboratory Instruction; Equilibrium; Solutions / Solvents
*  History
 Created:
Last Updated:		 August 29, 2000
June 22, 2005
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